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diff --git a/toolkit/crashreporter/google-breakpad/src/google_breakpad/processor/source_line_resolver_interface.h b/toolkit/crashreporter/google-breakpad/src/google_breakpad/processor/source_line_resolver_interface.h
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+// -*- mode: C++ -*-
+
+// Copyright (c) 2010 Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Abstract interface to return function/file/line info for a memory address.
+
+#ifndef GOOGLE_BREAKPAD_PROCESSOR_SOURCE_LINE_RESOLVER_INTERFACE_H__
+#define GOOGLE_BREAKPAD_PROCESSOR_SOURCE_LINE_RESOLVER_INTERFACE_H__
+
+#include <string>
+
+#include "common/using_std_string.h"
+#include "google_breakpad/common/breakpad_types.h"
+#include "google_breakpad/processor/code_module.h"
+
+namespace google_breakpad {
+
+struct StackFrame;
+struct WindowsFrameInfo;
+class CFIFrameInfo;
+
+class SourceLineResolverInterface {
+ public:
+  typedef uint64_t MemAddr;
+
+  virtual ~SourceLineResolverInterface() {}
+
+  // Adds a module to this resolver, returning true on success.
+  //
+  // module should have at least the code_file, debug_file,
+  // and debug_identifier members populated.
+  //
+  // map_file should contain line/address mappings for this module.
+  virtual bool LoadModule(const CodeModule *module,
+                          const string &map_file) = 0;
+  // Same as above, but takes the contents of a pre-read map buffer
+  virtual bool LoadModuleUsingMapBuffer(const CodeModule *module,
+                                        const string &map_buffer) = 0;
+
+  // Add an interface to load symbol using C-String data instead of string.
+  // This is useful in the optimization design for avoiding unnecessary copying
+  // of symbol data, in order to improve memory efficiency.
+  // LoadModuleUsingMemoryBuffer() does NOT take ownership of memory_buffer.
+  // LoadModuleUsingMemoryBuffer() null terminates the passed in buffer, if
+  // the last character is not a null terminator.
+  virtual bool LoadModuleUsingMemoryBuffer(const CodeModule *module,
+                                           char *memory_buffer,
+                                           size_t memory_buffer_size) = 0;
+
+  // Return true if the memory buffer should be deleted immediately after
+  // LoadModuleUsingMemoryBuffer(). Return false if the memory buffer has to be
+  // alive during the lifetime of the corresponding Module.
+  virtual bool ShouldDeleteMemoryBufferAfterLoadModule() = 0;
+
+  // Request that the specified module be unloaded from this resolver.
+  // A resolver may choose to ignore such a request.
+  virtual void UnloadModule(const CodeModule *module) = 0;
+
+  // Returns true if the module has been loaded.
+  virtual bool HasModule(const CodeModule *module) = 0;
+
+  // Returns true if the module has been loaded and it is corrupt.
+  virtual bool IsModuleCorrupt(const CodeModule *module) = 0;
+
+  // Fills in the function_base, function_name, source_file_name,
+  // and source_line fields of the StackFrame.  The instruction and
+  // module_name fields must already be filled in.
+  virtual void FillSourceLineInfo(StackFrame *frame) = 0;
+
+  // If Windows stack walking information is available covering
+  // FRAME's instruction address, return a WindowsFrameInfo structure
+  // describing it. If the information is not available, returns NULL.
+  // A NULL return value does not indicate an error. The caller takes
+  // ownership of any returned WindowsFrameInfo object.
+  virtual WindowsFrameInfo *FindWindowsFrameInfo(const StackFrame *frame) = 0;
+
+  // If CFI stack walking information is available covering ADDRESS,
+  // return a CFIFrameInfo structure describing it. If the information
+  // is not available, return NULL. The caller takes ownership of any
+  // returned CFIFrameInfo object.
+  virtual CFIFrameInfo *FindCFIFrameInfo(const StackFrame *frame) = 0;
+
+ protected:
+  // SourceLineResolverInterface cannot be instantiated except by subclasses
+  SourceLineResolverInterface() {}
+};
+
+}  // namespace google_breakpad
+
+#endif  // GOOGLE_BREAKPAD_PROCESSOR_SOURCE_LINE_RESOLVER_INTERFACE_H__