Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

8 files changed, 1831 insertions, 0 deletions

diff --git a/dom/canvas/test/webgl-conf/checkout/closure-library/closure/bin/build/closurebuilder.py b/dom/canvas/test/webgl-conf/checkout/closure-library/closure/bin/build/closurebuilder.py
new file mode 100755
index 0000000000..9e4e2eb339
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/closure-library/closure/bin/build/closurebuilder.py
@@ -0,0 +1,287 @@
+#!/usr/bin/env python
+#
+# Copyright 2009 The Closure Library Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS-IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Utility for Closure Library dependency calculation.
+
+ClosureBuilder scans source files to build dependency info.  From the
+dependencies, the script can produce a manifest in dependency order,
+a concatenated script, or compiled output from the Closure Compiler.
+
+Paths to files can be expressed as individual arguments to the tool (intended
+for use with find and xargs).  As a convenience, --root can be used to specify
+all JS files below a directory.
+
+usage: %prog [options] [file1.js file2.js ...]
+"""
+
+__author__ = 'nnaze@google.com (Nathan Naze)'
+
+
+import logging
+import optparse
+import os
+import sys
+
+import depstree
+import jscompiler
+import source
+import treescan
+
+
+def _GetOptionsParser():
+  """Get the options parser."""
+
+  parser = optparse.OptionParser(__doc__)
+  parser.add_option('-i',
+                    '--input',
+                    dest='inputs',
+                    action='append',
+                    default=[],
+                    help='One or more input files to calculate dependencies '
+                    'for.  The namespaces in this file will be combined with '
+                    'those given with the -n flag to form the set of '
+                    'namespaces to find dependencies for.')
+  parser.add_option('-n',
+                    '--namespace',
+                    dest='namespaces',
+                    action='append',
+                    default=[],
+                    help='One or more namespaces to calculate dependencies '
+                    'for.  These namespaces will be combined with those given '
+                    'with the -i flag to form the set of namespaces to find '
+                    'dependencies for.  A Closure namespace is a '
+                    'dot-delimited path expression declared with a call to '
+                    'goog.provide() (e.g. "goog.array" or "foo.bar").')
+  parser.add_option('--root',
+                    dest='roots',
+                    action='append',
+                    default=[],
+                    help='The paths that should be traversed to build the '
+                    'dependencies.')
+  parser.add_option('-o',
+                    '--output_mode',
+                    dest='output_mode',
+                    type='choice',
+                    action='store',
+                    choices=['list', 'script', 'compiled'],
+                    default='list',
+                    help='The type of output to generate from this script. '
+                    'Options are "list" for a list of filenames, "script" '
+                    'for a single script containing the contents of all the '
+                    'files, or "compiled" to produce compiled output with '
+                    'the Closure Compiler.  Default is "list".')
+  parser.add_option('-c',
+                    '--compiler_jar',
+                    dest='compiler_jar',
+                    action='store',
+                    help='The location of the Closure compiler .jar file.')
+  parser.add_option('-f',
+                    '--compiler_flags',
+                    dest='compiler_flags',
+                    default=[],
+                    action='append',
+                    help='Additional flags to pass to the Closure compiler. '
+                    'To pass multiple flags, --compiler_flags has to be '
+                    'specified multiple times.')
+  parser.add_option('-j',
+                    '--jvm_flags',
+                    dest='jvm_flags',
+                    default=[],
+                    action='append',
+                    help='Additional flags to pass to the JVM compiler. '
+                    'To pass multiple flags, --jvm_flags has to be '
+                    'specified multiple times.')
+  parser.add_option('--output_file',
+                    dest='output_file',
+                    action='store',
+                    help=('If specified, write output to this path instead of '
+                          'writing to standard output.'))
+
+  return parser
+
+
+def _GetInputByPath(path, sources):
+  """Get the source identified by a path.
+
+  Args:
+    path: str, A path to a file that identifies a source.
+    sources: An iterable collection of source objects.
+
+  Returns:
+    The source from sources identified by path, if found.  Converts to
+    real paths for comparison.
+  """
+  for js_source in sources:
+    # Convert both to real paths for comparison.
+    if os.path.realpath(path) == os.path.realpath(js_source.GetPath()):
+      return js_source
+
+
+def _GetClosureBaseFile(sources):
+  """Given a set of sources, returns the one base.js file.
+
+  Note that if zero or two or more base.js files are found, an error message
+  will be written and the program will be exited.
+
+  Args:
+    sources: An iterable of _PathSource objects.
+
+  Returns:
+    The _PathSource representing the base Closure file.
+  """
+  base_files = [
+      js_source for js_source in sources if _IsClosureBaseFile(js_source)]
+
+  if not base_files:
+    logging.error('No Closure base.js file found.')
+    sys.exit(1)
+  if len(base_files) > 1:
+    logging.error('More than one Closure base.js files found at these paths:')
+    for base_file in base_files:
+      logging.error(base_file.GetPath())
+    sys.exit(1)
+  return base_files[0]
+
+
+def _IsClosureBaseFile(js_source):
+  """Returns true if the given _PathSource is the Closure base.js source."""
+  return (os.path.basename(js_source.GetPath()) == 'base.js' and
+          js_source.provides == set(['goog']))
+
+
+class _PathSource(source.Source):
+  """Source file subclass that remembers its file path."""
+
+  def __init__(self, path):
+    """Initialize a source.
+
+    Args:
+      path: str, Path to a JavaScript file.  The source string will be read
+        from this file.
+    """
+    super(_PathSource, self).__init__(source.GetFileContents(path))
+
+    self._path = path
+
+  def __str__(self):
+    return 'PathSource %s' % self._path
+
+  def GetPath(self):
+    """Returns the path."""
+    return self._path
+
+
+def _WrapGoogModuleSource(src):
+  return ('goog.loadModule(function(exports) {{'
+          '"use strict";'
+          '{0}'
+          '\n'  # terminate any trailing single line comment.
+          ';return exports'
+          '}});\n').format(src)
+
+
+def main():
+  logging.basicConfig(format=(sys.argv[0] + ': %(message)s'),
+                      level=logging.INFO)
+  options, args = _GetOptionsParser().parse_args()
+
+  # Make our output pipe.
+  if options.output_file:
+    out = open(options.output_file, 'w')
+  else:
+    out = sys.stdout
+
+  sources = set()
+
+  logging.info('Scanning paths...')
+  for path in options.roots:
+    for js_path in treescan.ScanTreeForJsFiles(path):
+      sources.add(_PathSource(js_path))
+
+  # Add scripts specified on the command line.
+  for js_path in args:
+    sources.add(_PathSource(js_path))
+
+  logging.info('%s sources scanned.', len(sources))
+
+  # Though deps output doesn't need to query the tree, we still build it
+  # to validate dependencies.
+  logging.info('Building dependency tree..')
+  tree = depstree.DepsTree(sources)
+
+  input_namespaces = set()
+  inputs = options.inputs or []
+  for input_path in inputs:
+    js_input = _GetInputByPath(input_path, sources)
+    if not js_input:
+      logging.error('No source matched input %s', input_path)
+      sys.exit(1)
+    input_namespaces.update(js_input.provides)
+
+  input_namespaces.update(options.namespaces)
+
+  if not input_namespaces:
+    logging.error('No namespaces found. At least one namespace must be '
+                  'specified with the --namespace or --input flags.')
+    sys.exit(2)
+
+  # The Closure Library base file must go first.
+  base = _GetClosureBaseFile(sources)
+  deps = [base] + tree.GetDependencies(input_namespaces)
+
+  output_mode = options.output_mode
+  if output_mode == 'list':
+    out.writelines([js_source.GetPath() + '\n' for js_source in deps])
+  elif output_mode == 'script':
+    for js_source in deps:
+      src = js_source.GetSource()
+      if js_source.is_goog_module:
+        src = _WrapGoogModuleSource(src)
+      out.write(src + '\n')
+  elif output_mode == 'compiled':
+    logging.warning("""\
+Closure Compiler now natively understands and orders Closure dependencies and
+is prefererred over using this script for performing JavaScript compilation.
+
+Please migrate your codebase.
+
+See:
+https://github.com/google/closure-compiler/wiki/Manage-Closure-Dependencies
+""")
+
+    # Make sure a .jar is specified.
+    if not options.compiler_jar:
+      logging.error('--compiler_jar flag must be specified if --output is '
+                    '"compiled"')
+      sys.exit(2)
+
+    # Will throw an error if the compilation fails.
+    compiled_source = jscompiler.Compile(
+        options.compiler_jar,
+        [js_source.GetPath() for js_source in deps],
+        jvm_flags=options.jvm_flags,
+        compiler_flags=options.compiler_flags)
+
+    logging.info('JavaScript compilation succeeded.')
+    out.write(compiled_source)
+
+  else:
+    logging.error('Invalid value for --output flag.')
+    sys.exit(2)
+
+
+if __name__ == '__main__':
+  main()
diff --git a/dom/canvas/test/webgl-conf/checkout/closure-library/closure/bin/build/depstree.py b/dom/canvas/test/webgl-conf/checkout/closure-library/closure/bin/build/depstree.py
new file mode 100755
index 0000000000..f288dd3aa6
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/closure-library/closure/bin/build/depstree.py
@@ -0,0 +1,189 @@
+# Copyright 2009 The Closure Library Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS-IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+"""Class to represent a full Closure Library dependency tree.
+
+Offers a queryable tree of dependencies of a given set of sources.  The tree
+will also do logical validation to prevent duplicate provides and circular
+dependencies.
+"""
+
+__author__ = 'nnaze@google.com (Nathan Naze)'
+
+
+class DepsTree(object):
+  """Represents the set of dependencies between source files."""
+
+  def __init__(self, sources):
+    """Initializes the tree with a set of sources.
+
+    Args:
+      sources: A set of JavaScript sources.
+
+    Raises:
+      MultipleProvideError: A namespace is provided by muplitple sources.
+      NamespaceNotFoundError: A namespace is required but never provided.
+    """
+
+    self._sources = sources
+    self._provides_map = dict()
+
+    # Ensure nothing was provided twice.
+    for source in sources:
+      for provide in source.provides:
+        if provide in self._provides_map:
+          raise MultipleProvideError(
+              provide, [self._provides_map[provide], source])
+
+        self._provides_map[provide] = source
+
+    # Check that all required namespaces are provided.
+    for source in sources:
+      for require in source.requires:
+        if require not in self._provides_map:
+          raise NamespaceNotFoundError(require, source)
+
+  def GetDependencies(self, required_namespaces):
+    """Get source dependencies, in order, for the given namespaces.
+
+    Args:
+      required_namespaces: A string (for one) or list (for one or more) of
+        namespaces.
+
+    Returns:
+      A list of source objects that provide those namespaces and all
+      requirements, in dependency order.
+
+    Raises:
+      NamespaceNotFoundError: A namespace is requested but doesn't exist.
+      CircularDependencyError: A cycle is detected in the dependency tree.
+    """
+    if isinstance(required_namespaces, str):
+      required_namespaces = [required_namespaces]
+
+    deps_sources = []
+
+    for namespace in required_namespaces:
+      for source in DepsTree._ResolveDependencies(
+          namespace, [], self._provides_map, []):
+        if source not in deps_sources:
+          deps_sources.append(source)
+
+    return deps_sources
+
+  @staticmethod
+  def _ResolveDependencies(required_namespace, deps_list, provides_map,
+                           traversal_path):
+    """Resolve dependencies for Closure source files.
+
+    Follows the dependency tree down and builds a list of sources in dependency
+    order.  This function will recursively call itself to fill all dependencies
+    below the requested namespaces, and then append its sources at the end of
+    the list.
+
+    Args:
+      required_namespace: String of required namespace.
+      deps_list: List of sources in dependency order.  This function will append
+        the required source once all of its dependencies are satisfied.
+      provides_map: Map from namespace to source that provides it.
+      traversal_path: List of namespaces of our path from the root down the
+        dependency/recursion tree.  Used to identify cyclical dependencies.
+        This is a list used as a stack -- when the function is entered, the
+        current namespace is pushed and popped right before returning.
+        Each recursive call will check that the current namespace does not
+        appear in the list, throwing a CircularDependencyError if it does.
+
+    Returns:
+      The given deps_list object filled with sources in dependency order.
+
+    Raises:
+      NamespaceNotFoundError: A namespace is requested but doesn't exist.
+      CircularDependencyError: A cycle is detected in the dependency tree.
+    """
+
+    source = provides_map.get(required_namespace)
+    if not source:
+      raise NamespaceNotFoundError(required_namespace)
+
+    if required_namespace in traversal_path:
+      traversal_path.append(required_namespace)  # do this *after* the test
+
+      # This must be a cycle.
+      raise CircularDependencyError(traversal_path)
+
+    # If we don't have the source yet, we'll have to visit this namespace and
+    # add the required dependencies to deps_list.
+    if source not in deps_list:
+      traversal_path.append(required_namespace)
+
+      for require in source.requires:
+
+        # Append all other dependencies before we append our own.
+        DepsTree._ResolveDependencies(require, deps_list, provides_map,
+                                      traversal_path)
+      deps_list.append(source)
+
+      traversal_path.pop()
+
+    return deps_list
+
+
+class BaseDepsTreeError(Exception):
+  """Base DepsTree error."""
+
+  def __init__(self):
+    Exception.__init__(self)
+
+
+class CircularDependencyError(BaseDepsTreeError):
+  """Raised when a dependency cycle is encountered."""
+
+  def __init__(self, dependency_list):
+    BaseDepsTreeError.__init__(self)
+    self._dependency_list = dependency_list
+
+  def __str__(self):
+    return ('Encountered circular dependency:\n%s\n' %
+            '\n'.join(self._dependency_list))
+
+
+class MultipleProvideError(BaseDepsTreeError):
+  """Raised when a namespace is provided more than once."""
+
+  def __init__(self, namespace, sources):
+    BaseDepsTreeError.__init__(self)
+    self._namespace = namespace
+    self._sources = sources
+
+  def __str__(self):
+    source_strs = map(str, self._sources)
+
+    return ('Namespace "%s" provided more than once in sources:\n%s\n' %
+            (self._namespace, '\n'.join(source_strs)))
+
+
+class NamespaceNotFoundError(BaseDepsTreeError):
+  """Raised when a namespace is requested but not provided."""
+
+  def __init__(self, namespace, source=None):
+    BaseDepsTreeError.__init__(self)
+    self._namespace = namespace
+    self._source = source
+
+  def __str__(self):
+    msg = 'Namespace "%s" never provided.' % self._namespace
+    if self._source:
+      msg += ' Required in %s' % self._source
+    return msg
diff --git a/dom/canvas/test/webgl-conf/checkout/closure-library/closure/bin/build/depswriter.py b/dom/canvas/test/webgl-conf/checkout/closure-library/closure/bin/build/depswriter.py
new file mode 100755
index 0000000000..bc3be88a35
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/closure-library/closure/bin/build/depswriter.py
@@ -0,0 +1,204 @@
+#!/usr/bin/env python
+#
+# Copyright 2009 The Closure Library Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS-IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+"""Generates out a Closure deps.js file given a list of JavaScript sources.
+
+Paths can be specified as arguments or (more commonly) specifying trees
+with the flags (call with --help for descriptions).
+
+Usage: depswriter.py [path/to/js1.js [path/to/js2.js] ...]
+"""
+
+import logging
+import optparse
+import os
+import posixpath
+import shlex
+import sys
+
+import source
+import treescan
+
+
+__author__ = 'nnaze@google.com (Nathan Naze)'
+
+
+def MakeDepsFile(source_map):
+  """Make a generated deps file.
+
+  Args:
+    source_map: A dict map of the source path to source.Source object.
+
+  Returns:
+    str, A generated deps file source.
+  """
+
+  # Write in path alphabetical order
+  paths = sorted(source_map.keys())
+
+  lines = []
+
+  for path in paths:
+    js_source = source_map[path]
+
+    # We don't need to add entries that don't provide anything.
+    if js_source.provides:
+      lines.append(_GetDepsLine(path, js_source))
+
+  return ''.join(lines)
+
+
+def _GetDepsLine(path, js_source):
+  """Get a deps.js file string for a source."""
+
+  provides = sorted(js_source.provides)
+  requires = sorted(js_source.requires)
+  module = 'true' if js_source.is_goog_module else 'false'
+
+  return 'goog.addDependency(\'%s\', %s, %s, %s);\n' % (
+      path, provides, requires, module)
+
+
+def _GetOptionsParser():
+  """Get the options parser."""
+
+  parser = optparse.OptionParser(__doc__)
+
+  parser.add_option('--output_file',
+                    dest='output_file',
+                    action='store',
+                    help=('If specified, write output to this path instead of '
+                          'writing to standard output.'))
+  parser.add_option('--root',
+                    dest='roots',
+                    default=[],
+                    action='append',
+                    help='A root directory to scan for JS source files. '
+                    'Paths of JS files in generated deps file will be '
+                    'relative to this path.  This flag may be specified '
+                    'multiple times.')
+  parser.add_option('--root_with_prefix',
+                    dest='roots_with_prefix',
+                    default=[],
+                    action='append',
+                    help='A root directory to scan for JS source files, plus '
+                    'a prefix (if either contains a space, surround with '
+                    'quotes).  Paths in generated deps file will be relative '
+                    'to the root, but preceded by the prefix.  This flag '
+                    'may be specified multiple times.')
+  parser.add_option('--path_with_depspath',
+                    dest='paths_with_depspath',
+                    default=[],
+                    action='append',
+                    help='A path to a source file and an alternate path to '
+                    'the file in the generated deps file (if either contains '
+                    'a space, surround with whitespace). This flag may be '
+                    'specified multiple times.')
+  return parser
+
+
+def _NormalizePathSeparators(path):
+  """Replaces OS-specific path separators with POSIX-style slashes.
+
+  Args:
+    path: str, A file path.
+
+  Returns:
+    str, The path with any OS-specific path separators (such as backslash on
+      Windows) replaced with URL-compatible forward slashes. A no-op on systems
+      that use POSIX paths.
+  """
+  return path.replace(os.sep, posixpath.sep)
+
+
+def _GetRelativePathToSourceDict(root, prefix=''):
+  """Scans a top root directory for .js sources.
+
+  Args:
+    root: str, Root directory.
+    prefix: str, Prefix for returned paths.
+
+  Returns:
+    dict, A map of relative paths (with prefix, if given), to source.Source
+      objects.
+  """
+  # Remember and restore the cwd when we're done. We work from the root so
+  # that paths are relative from the root.
+  start_wd = os.getcwd()
+  os.chdir(root)
+
+  path_to_source = {}
+  for path in treescan.ScanTreeForJsFiles('.'):
+    prefixed_path = _NormalizePathSeparators(os.path.join(prefix, path))
+    path_to_source[prefixed_path] = source.Source(source.GetFileContents(path))
+
+  os.chdir(start_wd)
+
+  return path_to_source
+
+
+def _GetPair(s):
+  """Return a string as a shell-parsed tuple.  Two values expected."""
+  try:
+    # shlex uses '\' as an escape character, so they must be escaped.
+    s = s.replace('\\', '\\\\')
+    first, second = shlex.split(s)
+    return (first, second)
+  except:
+    raise Exception('Unable to parse input line as a pair: %s' % s)
+
+
+def main():
+  """CLI frontend to MakeDepsFile."""
+  logging.basicConfig(format=(sys.argv[0] + ': %(message)s'),
+                      level=logging.INFO)
+  options, args = _GetOptionsParser().parse_args()
+
+  path_to_source = {}
+
+  # Roots without prefixes
+  for root in options.roots:
+    path_to_source.update(_GetRelativePathToSourceDict(root))
+
+  # Roots with prefixes
+  for root_and_prefix in options.roots_with_prefix:
+    root, prefix = _GetPair(root_and_prefix)
+    path_to_source.update(_GetRelativePathToSourceDict(root, prefix=prefix))
+
+  # Source paths
+  for path in args:
+    path_to_source[path] = source.Source(source.GetFileContents(path))
+
+  # Source paths with alternate deps paths
+  for path_with_depspath in options.paths_with_depspath:
+    srcpath, depspath = _GetPair(path_with_depspath)
+    path_to_source[depspath] = source.Source(source.GetFileContents(srcpath))
+
+  # Make our output pipe.
+  if options.output_file:
+    out = open(options.output_file, 'w')
+  else:
+    out = sys.stdout
+
+  out.write('// This file was autogenerated by %s.\n' % sys.argv[0])
+  out.write('// Please do not edit.\n')
+
+  out.write(MakeDepsFile(path_to_source))
+
+
+if __name__ == '__main__':
+  main()
diff --git a/dom/canvas/test/webgl-conf/checkout/closure-library/closure/bin/build/jscompiler.py b/dom/canvas/test/webgl-conf/checkout/closure-library/closure/bin/build/jscompiler.py
new file mode 100644
index 0000000000..cc6eb55f9e
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/closure-library/closure/bin/build/jscompiler.py
@@ -0,0 +1,135 @@
+# Copyright 2010 The Closure Library Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS-IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Utility to use the Closure Compiler CLI from Python."""
+
+
+import logging
+import os
+import re
+import subprocess
+
+
+# Pulls just the major and minor version numbers from the first line of
+# 'java -version'. Versions are in the format of [0-9]+\.[0-9]+\..* See:
+# http://www.oracle.com/technetwork/java/javase/versioning-naming-139433.html
+_VERSION_REGEX = re.compile(r'"([0-9]+)\.([0-9]+)')
+
+
+class JsCompilerError(Exception):
+  """Raised if there's an error in calling the compiler."""
+  pass
+
+
+def _GetJavaVersionString():
+  """Get the version string from the Java VM."""
+  return subprocess.check_output(['java', '-version'], stderr=subprocess.STDOUT)
+
+
+def _ParseJavaVersion(version_string):
+  """Returns a 2-tuple for the current version of Java installed.
+
+  Args:
+    version_string: String of the Java version (e.g. '1.7.2-ea').
+
+  Returns:
+    The major and minor versions, as a 2-tuple (e.g. (1, 7)).
+  """
+  match = _VERSION_REGEX.search(version_string)
+  if match:
+    version = tuple(int(x, 10) for x in match.groups())
+    assert len(version) == 2
+    return version
+
+
+def _JavaSupports32BitMode():
+  """Determines whether the JVM supports 32-bit mode on the platform."""
+  # Suppresses process output to stderr and stdout from showing up in the
+  # console as we're only trying to determine 32-bit JVM support.
+  supported = False
+  try:
+    devnull = open(os.devnull, 'wb')
+    return subprocess.call(
+        ['java', '-d32', '-version'], stdout=devnull, stderr=devnull) == 0
+  except IOError:
+    pass
+  else:
+    devnull.close()
+  return supported
+
+
+def _GetJsCompilerArgs(compiler_jar_path, java_version, source_paths,
+                       jvm_flags, compiler_flags):
+  """Assembles arguments for call to JsCompiler."""
+
+  if java_version < (1, 7):
+    raise JsCompilerError('Closure Compiler requires Java 1.7 or higher. '
+                          'Please visit http://www.java.com/getjava')
+
+  args = ['java']
+
+  # Add JVM flags we believe will produce the best performance.  See
+  # https://groups.google.com/forum/#!topic/closure-library-discuss/7w_O9-vzlj4
+
+  # Attempt 32-bit mode if available (Java 7 on Mac OS X does not support 32-bit
+  # mode, for example).
+  if _JavaSupports32BitMode():
+    args += ['-d32']
+
+  # Prefer the "client" VM.
+  args += ['-client']
+
+  # Add JVM flags, if any
+  if jvm_flags:
+    args += jvm_flags
+
+  # Add the application JAR.
+  args += ['-jar', compiler_jar_path]
+
+  for path in source_paths:
+    args += ['--js', path]
+
+  # Add compiler flags, if any.
+  if compiler_flags:
+    args += compiler_flags
+
+  return args
+
+
+def Compile(compiler_jar_path, source_paths,
+            jvm_flags=None,
+            compiler_flags=None):
+  """Prepares command-line call to Closure Compiler.
+
+  Args:
+    compiler_jar_path: Path to the Closure compiler .jar file.
+    source_paths: Source paths to build, in order.
+    jvm_flags: A list of additional flags to pass on to JVM.
+    compiler_flags: A list of additional flags to pass on to Closure Compiler.
+
+  Returns:
+    The compiled source, as a string, or None if compilation failed.
+  """
+
+  java_version = _ParseJavaVersion(_GetJavaVersionString())
+
+  args = _GetJsCompilerArgs(
+      compiler_jar_path, java_version, source_paths, jvm_flags, compiler_flags)
+
+  logging.info('Compiling with the following command: %s', ' '.join(args))
+
+  try:
+    return subprocess.check_output(args)
+  except subprocess.CalledProcessError:
+    raise JsCompilerError('JavaScript compilation failed.')
diff --git a/dom/canvas/test/webgl-conf/checkout/closure-library/closure/bin/build/source.py b/dom/canvas/test/webgl-conf/checkout/closure-library/closure/bin/build/source.py
new file mode 100644
index 0000000000..be5e0d8ad6
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/closure-library/closure/bin/build/source.py
@@ -0,0 +1,127 @@
+# Copyright 2009 The Closure Library Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS-IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+"""Scans a source JS file for its provided and required namespaces.
+
+Simple class to scan a JavaScript file and express its dependencies.
+"""
+
+__author__ = 'nnaze@google.com'
+
+
+import re
+
+_BASE_REGEX_STRING = r'^\s*goog\.%s\(\s*[\'"](.+)[\'"]\s*\)'
+_MODULE_REGEX = re.compile(_BASE_REGEX_STRING % 'module')
+_PROVIDE_REGEX = re.compile(_BASE_REGEX_STRING % 'provide')
+
+_REQUIRE_REGEX_STRING = (r'^\s*(?:(?:var|let|const)\s+[a-zA-Z_$][a-zA-Z0-9$_]*'
+                         r'\s*=\s*)?goog\.require\(\s*[\'"](.+)[\'"]\s*\)')
+_REQUIRES_REGEX = re.compile(_REQUIRE_REGEX_STRING)
+
+
+class Source(object):
+  """Scans a JavaScript source for its provided and required namespaces."""
+
+  # Matches a "/* ... */" comment.
+  # Note: We can't definitively distinguish a "/*" in a string literal without a
+  # state machine tokenizer. We'll assume that a line starting with whitespace
+  # and "/*" is a comment.
+  _COMMENT_REGEX = re.compile(
+      r"""
+      ^\s*   # Start of a new line and whitespace
+      /\*    # Opening "/*"
+      .*?    # Non greedy match of any characters (including newlines)
+      \*/    # Closing "*/""",
+      re.MULTILINE | re.DOTALL | re.VERBOSE)
+
+  def __init__(self, source):
+    """Initialize a source.
+
+    Args:
+      source: str, The JavaScript source.
+    """
+
+    self.provides = set()
+    self.requires = set()
+    self.is_goog_module = False
+
+    self._source = source
+    self._ScanSource()
+
+  def GetSource(self):
+    """Get the source as a string."""
+    return self._source
+
+  @classmethod
+  def _StripComments(cls, source):
+    return cls._COMMENT_REGEX.sub('', source)
+
+  @classmethod
+  def _HasProvideGoogFlag(cls, source):
+    """Determines whether the @provideGoog flag is in a comment."""
+    for comment_content in cls._COMMENT_REGEX.findall(source):
+      if '@provideGoog' in comment_content:
+        return True
+
+    return False
+
+  def _ScanSource(self):
+    """Fill in provides and requires by scanning the source."""
+
+    stripped_source = self._StripComments(self.GetSource())
+
+    source_lines = stripped_source.splitlines()
+    for line in source_lines:
+      match = _PROVIDE_REGEX.match(line)
+      if match:
+        self.provides.add(match.group(1))
+      match = _MODULE_REGEX.match(line)
+      if match:
+        self.provides.add(match.group(1))
+        self.is_goog_module = True
+      match = _REQUIRES_REGEX.match(line)
+      if match:
+        self.requires.add(match.group(1))
+
+    # Closure's base file implicitly provides 'goog'.
+    # This is indicated with the @provideGoog flag.
+    if self._HasProvideGoogFlag(self.GetSource()):
+
+      if len(self.provides) or len(self.requires):
+        raise Exception(
+            'Base file should not provide or require namespaces.')
+
+      self.provides.add('goog')
+
+
+def GetFileContents(path):
+  """Get a file's contents as a string.
+
+  Args:
+    path: str, Path to file.
+
+  Returns:
+    str, Contents of file.
+
+  Raises:
+    IOError: An error occurred opening or reading the file.
+
+  """
+  fileobj = open(path)
+  try:
+    return fileobj.read()
+  finally:
+    fileobj.close()
diff --git a/dom/canvas/test/webgl-conf/checkout/closure-library/closure/bin/build/treescan.py b/dom/canvas/test/webgl-conf/checkout/closure-library/closure/bin/build/treescan.py
new file mode 100644
index 0000000000..6694593aab
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/closure-library/closure/bin/build/treescan.py
@@ -0,0 +1,78 @@
+#!/usr/bin/env python
+#
+# Copyright 2010 The Closure Library Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS-IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+"""Shared utility functions for scanning directory trees."""
+
+import os
+import re
+
+
+__author__ = 'nnaze@google.com (Nathan Naze)'
+
+
+# Matches a .js file path.
+_JS_FILE_REGEX = re.compile(r'^.+\.js$')
+
+
+def ScanTreeForJsFiles(root):
+  """Scans a directory tree for JavaScript files.
+
+  Args:
+    root: str, Path to a root directory.
+
+  Returns:
+    An iterable of paths to JS files, relative to cwd.
+  """
+  return ScanTree(root, path_filter=_JS_FILE_REGEX)
+
+
+def ScanTree(root, path_filter=None, ignore_hidden=True):
+  """Scans a directory tree for files.
+
+  Args:
+    root: str, Path to a root directory.
+    path_filter: A regular expression filter.  If set, only paths matching
+      the path_filter are returned.
+    ignore_hidden: If True, do not follow or return hidden directories or files
+      (those starting with a '.' character).
+
+  Yields:
+    A string path to files, relative to cwd.
+  """
+
+  def OnError(os_error):
+    raise os_error
+
+  for dirpath, dirnames, filenames in os.walk(root, onerror=OnError):
+    # os.walk allows us to modify dirnames to prevent decent into particular
+    # directories.  Avoid hidden directories.
+    for dirname in dirnames:
+      if ignore_hidden and dirname.startswith('.'):
+        dirnames.remove(dirname)
+
+    for filename in filenames:
+
+      # nothing that starts with '.'
+      if ignore_hidden and filename.startswith('.'):
+        continue
+
+      fullpath = os.path.join(dirpath, filename)
+
+      if path_filter and not path_filter.match(fullpath):
+        continue
+
+      yield os.path.normpath(fullpath)
diff --git a/dom/canvas/test/webgl-conf/checkout/closure-library/closure/bin/calcdeps.py b/dom/canvas/test/webgl-conf/checkout/closure-library/closure/bin/calcdeps.py
new file mode 100755
index 0000000000..9cb1a6db06
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/closure-library/closure/bin/calcdeps.py
@@ -0,0 +1,590 @@
+#!/usr/bin/env python
+#
+# Copyright 2006 The Closure Library Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS-IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+"""Calculates JavaScript dependencies without requiring Google's build system.
+
+This tool is deprecated and is provided for legacy users.
+See build/closurebuilder.py and build/depswriter.py for the current tools.
+
+It iterates over a number of search paths and builds a dependency tree.  With
+the inputs provided, it walks the dependency tree and outputs all the files
+required for compilation.
+"""
+
+
+
+
+
+try:
+  import distutils.version
+except ImportError:
+  # distutils is not available in all environments
+  distutils = None
+
+import logging
+import optparse
+import os
+import re
+import subprocess
+import sys
+
+
+_BASE_REGEX_STRING = '^\s*goog\.%s\(\s*[\'"](.+)[\'"]\s*\)'
+req_regex = re.compile(_BASE_REGEX_STRING % 'require')
+prov_regex = re.compile(_BASE_REGEX_STRING % 'provide')
+ns_regex = re.compile('^ns:((\w+\.)*(\w+))$')
+version_regex = re.compile('[\.0-9]+')
+
+
+def IsValidFile(ref):
+  """Returns true if the provided reference is a file and exists."""
+  return os.path.isfile(ref)
+
+
+def IsJsFile(ref):
+  """Returns true if the provided reference is a Javascript file."""
+  return ref.endswith('.js')
+
+
+def IsNamespace(ref):
+  """Returns true if the provided reference is a namespace."""
+  return re.match(ns_regex, ref) is not None
+
+
+def IsDirectory(ref):
+  """Returns true if the provided reference is a directory."""
+  return os.path.isdir(ref)
+
+
+def ExpandDirectories(refs):
+  """Expands any directory references into inputs.
+
+  Description:
+    Looks for any directories in the provided references.  Found directories
+    are recursively searched for .js files, which are then added to the result
+    list.
+
+  Args:
+    refs: a list of references such as files, directories, and namespaces
+
+  Returns:
+    A list of references with directories removed and replaced by any
+    .js files that are found in them. Also, the paths will be normalized.
+  """
+  result = []
+  for ref in refs:
+    if IsDirectory(ref):
+      # Disable 'Unused variable' for subdirs
+      # pylint: disable=unused-variable
+      for (directory, subdirs, filenames) in os.walk(ref):
+        for filename in filenames:
+          if IsJsFile(filename):
+            result.append(os.path.join(directory, filename))
+    else:
+      result.append(ref)
+  return map(os.path.normpath, result)
+
+
+class DependencyInfo(object):
+  """Represents a dependency that is used to build and walk a tree."""
+
+  def __init__(self, filename):
+    self.filename = filename
+    self.provides = []
+    self.requires = []
+
+  def __str__(self):
+    return '%s Provides: %s Requires: %s' % (self.filename,
+                                             repr(self.provides),
+                                             repr(self.requires))
+
+
+def BuildDependenciesFromFiles(files):
+  """Build a list of dependencies from a list of files.
+
+  Description:
+    Takes a list of files, extracts their provides and requires, and builds
+    out a list of dependency objects.
+
+  Args:
+    files: a list of files to be parsed for goog.provides and goog.requires.
+
+  Returns:
+    A list of dependency objects, one for each file in the files argument.
+  """
+  result = []
+  filenames = set()
+  for filename in files:
+    if filename in filenames:
+      continue
+
+    # Python 3 requires the file encoding to be specified
+    if (sys.version_info[0] < 3):
+      file_handle = open(filename, 'r')
+    else:
+      file_handle = open(filename, 'r', encoding='utf8')
+
+    try:
+      dep = CreateDependencyInfo(filename, file_handle)
+      result.append(dep)
+    finally:
+      file_handle.close()
+
+    filenames.add(filename)
+
+  return result
+
+
+def CreateDependencyInfo(filename, source):
+  """Create dependency info.
+
+  Args:
+    filename: Filename for source.
+    source: File-like object containing source.
+
+  Returns:
+    A DependencyInfo object with provides and requires filled.
+  """
+  dep = DependencyInfo(filename)
+  for line in source:
+    if re.match(req_regex, line):
+      dep.requires.append(re.search(req_regex, line).group(1))
+    if re.match(prov_regex, line):
+      dep.provides.append(re.search(prov_regex, line).group(1))
+  return dep
+
+
+def BuildDependencyHashFromDependencies(deps):
+  """Builds a hash for searching dependencies by the namespaces they provide.
+
+  Description:
+    Dependency objects can provide multiple namespaces.  This method enumerates
+    the provides of each dependency and adds them to a hash that can be used
+    to easily resolve a given dependency by a namespace it provides.
+
+  Args:
+    deps: a list of dependency objects used to build the hash.
+
+  Raises:
+    Exception: If a multiple files try to provide the same namepace.
+
+  Returns:
+    A hash table { namespace: dependency } that can be used to resolve a
+    dependency by a namespace it provides.
+  """
+  dep_hash = {}
+  for dep in deps:
+    for provide in dep.provides:
+      if provide in dep_hash:
+        raise Exception('Duplicate provide (%s) in (%s, %s)' % (
+            provide,
+            dep_hash[provide].filename,
+            dep.filename))
+      dep_hash[provide] = dep
+  return dep_hash
+
+
+def CalculateDependencies(paths, inputs):
+  """Calculates the dependencies for given inputs.
+
+  Description:
+    This method takes a list of paths (files, directories) and builds a
+    searchable data structure based on the namespaces that each .js file
+    provides.  It then parses through each input, resolving dependencies
+    against this data structure.  The final output is a list of files,
+    including the inputs, that represent all of the code that is needed to
+    compile the given inputs.
+
+  Args:
+    paths: the references (files, directories) that are used to build the
+      dependency hash.
+    inputs: the inputs (files, directories, namespaces) that have dependencies
+      that need to be calculated.
+
+  Raises:
+    Exception: if a provided input is invalid.
+
+  Returns:
+    A list of all files, including inputs, that are needed to compile the given
+    inputs.
+  """
+  deps = BuildDependenciesFromFiles(paths + inputs)
+  search_hash = BuildDependencyHashFromDependencies(deps)
+  result_list = []
+  seen_list = []
+  for input_file in inputs:
+    if IsNamespace(input_file):
+      namespace = re.search(ns_regex, input_file).group(1)
+      if namespace not in search_hash:
+        raise Exception('Invalid namespace (%s)' % namespace)
+      input_file = search_hash[namespace].filename
+    if not IsValidFile(input_file) or not IsJsFile(input_file):
+      raise Exception('Invalid file (%s)' % input_file)
+    seen_list.append(input_file)
+    file_handle = open(input_file, 'r')
+    try:
+      for line in file_handle:
+        if re.match(req_regex, line):
+          require = re.search(req_regex, line).group(1)
+          ResolveDependencies(require, search_hash, result_list, seen_list)
+    finally:
+      file_handle.close()
+    result_list.append(input_file)
+
+  # All files depend on base.js, so put it first.
+  base_js_path = FindClosureBasePath(paths)
+  if base_js_path:
+    result_list.insert(0, base_js_path)
+  else:
+    logging.warning('Closure Library base.js not found.')
+
+  return result_list
+
+
+def FindClosureBasePath(paths):
+  """Given a list of file paths, return Closure base.js path, if any.
+
+  Args:
+    paths: A list of paths.
+
+  Returns:
+    The path to Closure's base.js file including filename, if found.
+  """
+
+  for path in paths:
+    pathname, filename = os.path.split(path)
+
+    if filename == 'base.js':
+      f = open(path)
+
+      is_base = False
+
+      # Sanity check that this is the Closure base file.  Check that this
+      # is where goog is defined.  This is determined by the @provideGoog
+      # flag.
+      for line in f:
+        if '@provideGoog' in line:
+          is_base = True
+          break
+
+      f.close()
+
+      if is_base:
+        return path
+
+def ResolveDependencies(require, search_hash, result_list, seen_list):
+  """Takes a given requirement and resolves all of the dependencies for it.
+
+  Description:
+    A given requirement may require other dependencies.  This method
+    recursively resolves all dependencies for the given requirement.
+
+  Raises:
+    Exception: when require does not exist in the search_hash.
+
+  Args:
+    require: the namespace to resolve dependencies for.
+    search_hash: the data structure used for resolving dependencies.
+    result_list: a list of filenames that have been calculated as dependencies.
+      This variable is the output for this function.
+    seen_list: a list of filenames that have been 'seen'.  This is required
+      for the dependency->dependant ordering.
+  """
+  if require not in search_hash:
+    raise Exception('Missing provider for (%s)' % require)
+
+  dep = search_hash[require]
+  if not dep.filename in seen_list:
+    seen_list.append(dep.filename)
+    for sub_require in dep.requires:
+      ResolveDependencies(sub_require, search_hash, result_list, seen_list)
+    result_list.append(dep.filename)
+
+
+def GetDepsLine(dep, base_path):
+  """Returns a JS string for a dependency statement in the deps.js file.
+
+  Args:
+    dep: The dependency that we're printing.
+    base_path: The path to Closure's base.js including filename.
+  """
+  return 'goog.addDependency("%s", %s, %s);' % (
+      GetRelpath(dep.filename, base_path), dep.provides, dep.requires)
+
+
+def GetRelpath(path, start):
+  """Return a relative path to |path| from |start|."""
+  # NOTE: Python 2.6 provides os.path.relpath, which has almost the same
+  # functionality as this function. Since we want to support 2.4, we have
+  # to implement it manually. :(
+  path_list = os.path.abspath(os.path.normpath(path)).split(os.sep)
+  start_list = os.path.abspath(
+      os.path.normpath(os.path.dirname(start))).split(os.sep)
+
+  common_prefix_count = 0
+  for i in range(0, min(len(path_list), len(start_list))):
+    if path_list[i] != start_list[i]:
+      break
+    common_prefix_count += 1
+
+  # Always use forward slashes, because this will get expanded to a url,
+  # not a file path.
+  return '/'.join(['..'] * (len(start_list) - common_prefix_count) +
+                  path_list[common_prefix_count:])
+
+
+def PrintLine(msg, out):
+  out.write(msg)
+  out.write('\n')
+
+
+def PrintDeps(source_paths, deps, out):
+  """Print out a deps.js file from a list of source paths.
+
+  Args:
+    source_paths: Paths that we should generate dependency info for.
+    deps: Paths that provide dependency info. Their dependency info should
+        not appear in the deps file.
+    out: The output file.
+
+  Returns:
+    True on success, false if it was unable to find the base path
+    to generate deps relative to.
+  """
+  base_path = FindClosureBasePath(source_paths + deps)
+  if not base_path:
+    return False
+
+  PrintLine('// This file was autogenerated by calcdeps.py', out)
+  excludesSet = set(deps)
+
+  for dep in BuildDependenciesFromFiles(source_paths + deps):
+    if not dep.filename in excludesSet:
+      PrintLine(GetDepsLine(dep, base_path), out)
+
+  return True
+
+
+def PrintScript(source_paths, out):
+  for index, dep in enumerate(source_paths):
+    PrintLine('// Input %d' % index, out)
+    f = open(dep, 'r')
+    PrintLine(f.read(), out)
+    f.close()
+
+
+def GetJavaVersion():
+  """Returns the string for the current version of Java installed."""
+  proc = subprocess.Popen(['java', '-version'], stderr=subprocess.PIPE)
+  proc.wait()
+  version_line = proc.stderr.read().splitlines()[0]
+  return version_regex.search(version_line).group()
+
+
+def FilterByExcludes(options, files):
+  """Filters the given files by the exlusions specified at the command line.
+
+  Args:
+    options: The flags to calcdeps.
+    files: The files to filter.
+  Returns:
+    A list of files.
+  """
+  excludes = []
+  if options.excludes:
+    excludes = ExpandDirectories(options.excludes)
+
+  excludesSet = set(excludes)
+  return [i for i in files if not i in excludesSet]
+
+
+def GetPathsFromOptions(options):
+  """Generates the path files from flag options.
+
+  Args:
+    options: The flags to calcdeps.
+  Returns:
+    A list of files in the specified paths. (strings).
+  """
+
+  search_paths = options.paths
+  if not search_paths:
+    search_paths = ['.']  # Add default folder if no path is specified.
+
+  search_paths = ExpandDirectories(search_paths)
+  return FilterByExcludes(options, search_paths)
+
+
+def GetInputsFromOptions(options):
+  """Generates the inputs from flag options.
+
+  Args:
+    options: The flags to calcdeps.
+  Returns:
+    A list of inputs (strings).
+  """
+  inputs = options.inputs
+  if not inputs:  # Parse stdin
+    logging.info('No inputs specified. Reading from stdin...')
+    inputs = filter(None, [line.strip('\n') for line in sys.stdin.readlines()])
+
+  logging.info('Scanning files...')
+  inputs = ExpandDirectories(inputs)
+
+  return FilterByExcludes(options, inputs)
+
+
+def Compile(compiler_jar_path, source_paths, out, flags=None):
+  """Prepares command-line call to Closure compiler.
+
+  Args:
+    compiler_jar_path: Path to the Closure compiler .jar file.
+    source_paths: Source paths to build, in order.
+    flags: A list of additional flags to pass on to Closure compiler.
+  """
+  args = ['java', '-jar', compiler_jar_path]
+  for path in source_paths:
+    args += ['--js', path]
+
+  if flags:
+    args += flags
+
+  logging.info('Compiling with the following command: %s', ' '.join(args))
+  proc = subprocess.Popen(args, stdout=subprocess.PIPE)
+  (stdoutdata, stderrdata) = proc.communicate()
+  if proc.returncode != 0:
+    logging.error('JavaScript compilation failed.')
+    sys.exit(1)
+  else:
+    out.write(stdoutdata)
+
+
+def main():
+  """The entrypoint for this script."""
+
+  logging.basicConfig(format='calcdeps.py: %(message)s', level=logging.INFO)
+
+  usage = 'usage: %prog [options] arg'
+  parser = optparse.OptionParser(usage)
+  parser.add_option('-i',
+                    '--input',
+                    dest='inputs',
+                    action='append',
+                    help='The inputs to calculate dependencies for. Valid '
+                    'values can be files, directories, or namespaces '
+                    '(ns:goog.net.XhrIo).  Only relevant to "list" and '
+                    '"script" output.')
+  parser.add_option('-p',
+                    '--path',
+                    dest='paths',
+                    action='append',
+                    help='The paths that should be traversed to build the '
+                    'dependencies.')
+  parser.add_option('-d',
+                    '--dep',
+                    dest='deps',
+                    action='append',
+                    help='Directories or files that should be traversed to '
+                    'find required dependencies for the deps file. '
+                    'Does not generate dependency information for names '
+                    'provided by these files. Only useful in "deps" mode.')
+  parser.add_option('-e',
+                    '--exclude',
+                    dest='excludes',
+                    action='append',
+                    help='Files or directories to exclude from the --path '
+                    'and --input flags')
+  parser.add_option('-o',
+                    '--output_mode',
+                    dest='output_mode',
+                    action='store',
+                    default='list',
+                    help='The type of output to generate from this script. '
+                    'Options are "list" for a list of filenames, "script" '
+                    'for a single script containing the contents of all the '
+                    'file, "deps" to generate a deps.js file for all '
+                    'paths, or "compiled" to produce compiled output with '
+                    'the Closure compiler.')
+  parser.add_option('-c',
+                    '--compiler_jar',
+                    dest='compiler_jar',
+                    action='store',
+                    help='The location of the Closure compiler .jar file.')
+  parser.add_option('-f',
+                    '--compiler_flag',
+                    '--compiler_flags', # for backwards compatability
+                    dest='compiler_flags',
+                    action='append',
+                    help='Additional flag to pass to the Closure compiler. '
+                    'May be specified multiple times to pass multiple flags.')
+  parser.add_option('--output_file',
+                    dest='output_file',
+                    action='store',
+                    help=('If specified, write output to this path instead of '
+                          'writing to standard output.'))
+
+  (options, args) = parser.parse_args()
+
+  search_paths = GetPathsFromOptions(options)
+
+  if options.output_file:
+    out = open(options.output_file, 'w')
+  else:
+    out = sys.stdout
+
+  if options.output_mode == 'deps':
+    result = PrintDeps(search_paths, ExpandDirectories(options.deps or []), out)
+    if not result:
+      logging.error('Could not find Closure Library in the specified paths')
+      sys.exit(1)
+
+    return
+
+  inputs = GetInputsFromOptions(options)
+
+  logging.info('Finding Closure dependencies...')
+  deps = CalculateDependencies(search_paths, inputs)
+  output_mode = options.output_mode
+
+  if output_mode == 'script':
+    PrintScript(deps, out)
+  elif output_mode == 'list':
+    # Just print out a dep per line
+    for dep in deps:
+      PrintLine(dep, out)
+  elif output_mode == 'compiled':
+    # Make sure a .jar is specified.
+    if not options.compiler_jar:
+      logging.error('--compiler_jar flag must be specified if --output is '
+                    '"compiled"')
+      sys.exit(1)
+
+    # User friendly version check.
+    if distutils and not (distutils.version.LooseVersion(GetJavaVersion()) >
+        distutils.version.LooseVersion('1.6')):
+      logging.error('Closure Compiler requires Java 1.6 or higher.')
+      logging.error('Please visit http://www.java.com/getjava')
+      sys.exit(1)
+
+    Compile(options.compiler_jar, deps, out, options.compiler_flags)
+
+  else:
+    logging.error('Invalid value for --output flag.')
+    sys.exit(1)
+
+if __name__ == '__main__':
+  main()
diff --git a/dom/canvas/test/webgl-conf/checkout/closure-library/closure/bin/scopify.py b/dom/canvas/test/webgl-conf/checkout/closure-library/closure/bin/scopify.py
new file mode 100755
index 0000000000..d8057efbc9
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/closure-library/closure/bin/scopify.py
@@ -0,0 +1,221 @@
+#!/usr/bin/python
+#
+# Copyright 2010 The Closure Library Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS-IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+"""Automatically converts codebases over to goog.scope.
+
+Usage:
+cd path/to/my/dir;
+../../../../javascript/closure/bin/scopify.py
+
+Scans every file in this directory, recursively. Looks for existing
+goog.scope calls, and goog.require'd symbols. If it makes sense to
+generate a goog.scope call for the file, then we will do so, and
+try to auto-generate some aliases based on the goog.require'd symbols.
+
+Known Issues:
+
+  When a file is goog.scope'd, the file contents will be indented +2.
+  This may put some lines over 80 chars. These will need to be fixed manually.
+
+  We will only try to create aliases for capitalized names. We do not check
+  to see if those names will conflict with any existing locals.
+
+  This creates merge conflicts for every line of every outstanding change.
+  If you intend to run this on your codebase, make sure your team members
+  know. Better yet, send them this script so that they can scopify their
+  outstanding changes and "accept theirs".
+
+  When an alias is "captured", it can no longer be stubbed out for testing.
+  Run your tests.
+
+"""
+
+__author__ = 'nicksantos@google.com (Nick Santos)'
+
+import os.path
+import re
+import sys
+
+REQUIRES_RE = re.compile(r"goog.require\('([^']*)'\)")
+
+# Edit this manually if you want something to "always" be aliased.
+# TODO(nicksantos): Add a flag for this.
+DEFAULT_ALIASES = {}
+
+def Transform(lines):
+  """Converts the contents of a file into javascript that uses goog.scope.
+
+  Arguments:
+    lines: A list of strings, corresponding to each line of the file.
+  Returns:
+    A new list of strings, or None if the file was not modified.
+  """
+  requires = []
+
+  # Do an initial scan to be sure that this file can be processed.
+  for line in lines:
+    # Skip this file if it has already been scopified.
+    if line.find('goog.scope') != -1:
+      return None
+
+    # If there are any global vars or functions, then we also have
+    # to skip the whole file. We might be able to deal with this
+    # more elegantly.
+    if line.find('var ') == 0 or line.find('function ') == 0:
+      return None
+
+    for match in REQUIRES_RE.finditer(line):
+      requires.append(match.group(1))
+
+  if len(requires) == 0:
+    return None
+
+  # Backwards-sort the requires, so that when one is a substring of another,
+  # we match the longer one first.
+  for val in DEFAULT_ALIASES.values():
+    if requires.count(val) == 0:
+      requires.append(val)
+
+  requires.sort()
+  requires.reverse()
+
+  # Generate a map of requires to their aliases
+  aliases_to_globals = DEFAULT_ALIASES.copy()
+  for req in requires:
+    index = req.rfind('.')
+    if index == -1:
+      alias = req
+    else:
+      alias = req[(index + 1):]
+
+    # Don't scopify lowercase namespaces, because they may conflict with
+    # local variables.
+    if alias[0].isupper():
+      aliases_to_globals[alias] = req
+
+  aliases_to_matchers = {}
+  globals_to_aliases = {}
+  for alias, symbol in aliases_to_globals.items():
+    globals_to_aliases[symbol] = alias
+    aliases_to_matchers[alias] = re.compile('\\b%s\\b' % symbol)
+
+  # Insert a goog.scope that aliases all required symbols.
+  result = []
+
+  START = 0
+  SEEN_REQUIRES = 1
+  IN_SCOPE = 2
+
+  mode = START
+  aliases_used = set()
+  insertion_index = None
+  num_blank_lines = 0
+  for line in lines:
+    if mode == START:
+      result.append(line)
+
+      if re.search(REQUIRES_RE, line):
+        mode = SEEN_REQUIRES
+
+    elif mode == SEEN_REQUIRES:
+      if (line and
+          not re.search(REQUIRES_RE, line) and
+          not line.isspace()):
+        # There should be two blank lines before goog.scope
+        result += ['\n'] * 2
+        result.append('goog.scope(function() {\n')
+        insertion_index = len(result)
+        result += ['\n'] * num_blank_lines
+        mode = IN_SCOPE
+      elif line.isspace():
+        # Keep track of the number of blank lines before each block of code so
+        # that we can move them after the goog.scope line if necessary.
+        num_blank_lines += 1
+      else:
+        # Print the blank lines we saw before this code block
+        result += ['\n'] * num_blank_lines
+        num_blank_lines = 0
+        result.append(line)
+
+    if mode == IN_SCOPE:
+      for symbol in requires:
+        if not symbol in globals_to_aliases:
+          continue
+
+        alias = globals_to_aliases[symbol]
+        matcher = aliases_to_matchers[alias]
+        for match in matcher.finditer(line):
+          # Check to make sure we're not in a string.
+          # We do this by being as conservative as possible:
+          # if there are any quote or double quote characters
+          # before the symbol on this line, then bail out.
+          before_symbol = line[:match.start(0)]
+          if before_symbol.count('"') > 0 or before_symbol.count("'") > 0:
+            continue
+
+          line = line.replace(match.group(0), alias)
+          aliases_used.add(alias)
+
+      if line.isspace():
+        # Truncate all-whitespace lines
+        result.append('\n')
+      else:
+        result.append(line)
+
+  if len(aliases_used):
+    aliases_used = [alias for alias in aliases_used]
+    aliases_used.sort()
+    aliases_used.reverse()
+    for alias in aliases_used:
+      symbol = aliases_to_globals[alias]
+      result.insert(insertion_index,
+                    'var %s = %s;\n' % (alias, symbol))
+    result.append('});  // goog.scope\n')
+    return result
+  else:
+    return None
+
+def TransformFileAt(path):
+  """Converts a file into javascript that uses goog.scope.
+
+  Arguments:
+    path: A path to a file.
+  """
+  f = open(path)
+  lines = Transform(f.readlines())
+  if lines:
+    f = open(path, 'w')
+    for l in lines:
+      f.write(l)
+    f.close()
+
+if __name__ == '__main__':
+  args = sys.argv[1:]
+  if not len(args):
+    args = '.'
+
+  for file_name in args:
+    if os.path.isdir(file_name):
+      for root, dirs, files in os.walk(file_name):
+        for name in files:
+          if name.endswith('.js') and \
+              not os.path.islink(os.path.join(root, name)):
+            TransformFileAt(os.path.join(root, name))
+    else:
+      if file_name.endswith('.js') and \
+          not os.path.islink(file_name):
+        TransformFileAt(file_name)