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diff --git a/toolkit/crashreporter/google-breakpad/src/common/windows/omap.h b/toolkit/crashreporter/google-breakpad/src/common/windows/omap.h
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+// Copyright 2013 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.
+
+// Provides an API for mapping symbols through OMAP information, if a PDB file
+// is augmented with it. This allows breakpad to work with addresses in
+// transformed images by transforming the symbols themselves, rather than
+// transforming addresses prior to querying symbols (the way it is typically
+// done by Windows-native tools, including the DIA).
+
+#ifndef COMMON_WINDOWS_OMAP_H_
+#define COMMON_WINDOWS_OMAP_H_
+
+#include "common/windows/omap_internal.h"
+
+namespace google_breakpad {
+
+// If the given session contains OMAP data this extracts it, populating
+// |omap_data|, and then disabling automatic translation for the session.
+// OMAP data is present in the PDB if |omap_data| is not empty. This returns
+// true on success, false otherwise.
+bool GetOmapDataAndDisableTranslation(IDiaSession* dia_session,
+                                      OmapData* omap_data);
+
+// Given raw OMAP data builds an ImageMap. This can be used to query individual
+// image ranges using MapAddressRange.
+// |omap_data|| is the OMAP data extracted from the PDB.
+// |image_map| will be populated with a description of the image mapping. If
+//     |omap_data| is empty then this will also be empty.
+void BuildImageMap(const OmapData& omap_data, ImageMap* image_map);
+
+// Given an address range in the original image space determines how exactly it
+// has been tranformed.
+// |omap_data| is the OMAP data extracted from the PDB, which must not be
+//     empty.
+// |original_range| is the address range in the original image being queried.
+// |mapped_ranges| will be populated with a full description of the mapping.
+//     They may be disjoint in the transformed image so a vector is needed to
+//     fully represent the mapping. This will be appended to if it is not
+//     empty. If |omap_data| is empty then |mapped_ranges| will simply be
+//     populated with a copy of |original_range| (the identity transform).
+void MapAddressRange(const ImageMap& image_map,
+                     const AddressRange& original_range,
+                     AddressRangeVector* mapped_ranges);
+
+}  // namespace google_breakpad
+
+#endif  // COMMON_WINDOWS_OMAP_H_