1 files changed, 68 insertions, 0 deletions
diff --git a/third_party/libwebrtc/build/skia_gold_common/output_managerless_skia_gold_session.py b/third_party/libwebrtc/build/skia_gold_common/output_managerless_skia_gold_session.py
new file mode 100644
index 0000000000..b22487f749
--- /dev/null
+++ b/third_party/libwebrtc/build/skia_gold_common/output_managerless_skia_gold_session.py
@@ -0,0 +1,68 @@
+# Copyright 2020 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+"""Implementation of skia_gold_session.py without output managers.
+
+Diff output is instead stored in a directory and pointed to with file:// URLs.
+"""
+
+import os
+import subprocess
+import time
+
+from skia_gold_common import skia_gold_session
+
+
+class OutputManagerlessSkiaGoldSession(skia_gold_session.SkiaGoldSession):
+  def RunComparison(  # pylint: disable=too-many-arguments
+      self,
+      name,
+      png_file,
+      output_manager=True,
+      inexact_matching_args=None,
+      use_luci=True,
+      optional_keys=None,
+      force_dryrun=False):
+    # Passing True for the output manager is a bit of a hack, as we don't
+    # actually need an output manager and just need to get past the truthy
+    # check.
+    return super(OutputManagerlessSkiaGoldSession, self).RunComparison(
+        name=name,
+        png_file=png_file,
+        output_manager=output_manager,
+        inexact_matching_args=inexact_matching_args,
+        use_luci=use_luci,
+        optional_keys=optional_keys,
+        force_dryrun=force_dryrun)
+
+  def _CreateDiffOutputDir(self, name):
+    # Do this instead of just making a temporary directory so that it's easier
+    # for users to look through multiple results. We intentionally do not clean
+    # this directory up since the user might need to look at it later.
+    timestamp = int(time.time())
+    name = '%s_%d' % (name, timestamp)
+    filepath = os.path.join(self._local_png_directory, name)
+    os.makedirs(filepath)
+    return filepath
+
+  def _StoreDiffLinks(self, image_name, _, output_dir):
+    results = self._comparison_results.setdefault(image_name,
+                                                  self.ComparisonResults())
+    # The directory should contain "input-<hash>.png", "closest-<hash>.png",
+    # and "diff.png".
+    for f in os.listdir(output_dir):
+      file_url = 'file://%s' % os.path.join(output_dir, f)
+      if f.startswith('input-'):
+        results.local_diff_given_image = file_url
+      elif f.startswith('closest-'):
+        results.local_diff_closest_image = file_url
+      elif f == 'diff.png':
+        results.local_diff_diff_image = file_url
+
+  @staticmethod
+  def _RunCmdForRcAndOutput(cmd):
+    try:
+      output = subprocess.check_output(cmd, stderr=subprocess.STDOUT)
+      return 0, output
+    except subprocess.CalledProcessError as e:
+      return e.returncode, e.output