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diff --git a/chromium/media/base/audio_video_metadata_extractor.h b/chromium/media/base/audio_video_metadata_extractor.h
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+++ b/chromium/media/base/audio_video_metadata_extractor.h
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+// Copyright 2014 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.
+
+#ifndef MEDIA_BASE_AUDIO_VIDEO_METADATA_EXTRACTOR_H_
+#define MEDIA_BASE_AUDIO_VIDEO_METADATA_EXTRACTOR_H_
+
+#include <map>
+#include <string>
+#include <vector>
+
+#include "base/basictypes.h"
+#include "media/base/media_export.h"
+
+struct AVDictionary;
+
+namespace media {
+
+class DataSource;
+
+// This class extracts a string dictionary of metadata tags for audio and video
+// files. It also provides the format name.
+class MEDIA_EXPORT AudioVideoMetadataExtractor {
+ public:
+  typedef std::map<std::string, std::string> TagDictionary;
+
+  struct StreamInfo {
+    StreamInfo();
+    ~StreamInfo();
+    std::string type;
+    TagDictionary tags;
+  };
+
+  typedef std::vector<StreamInfo> StreamInfoVector;
+
+  AudioVideoMetadataExtractor();
+  ~AudioVideoMetadataExtractor();
+
+  // Returns whether or not the fields were successfully extracted. Should only
+  // be called once.
+  bool Extract(DataSource* source, bool extract_attached_pics);
+
+  // Returns -1 if we cannot extract the duration. In seconds.
+  double duration() const;
+
+  // Returns -1 for containers without video.
+  int width() const;
+  int height() const;
+
+  // Returns -1 if undefined.
+  int rotation() const;
+
+  // Returns -1 or an empty string if the value is undefined.
+  const std::string& album() const;
+  const std::string& artist() const;
+  const std::string& comment() const;
+  const std::string& copyright() const;
+  const std::string& date() const;
+  int disc() const;
+  const std::string& encoder() const;
+  const std::string& encoded_by() const;
+  const std::string& genre() const;
+  const std::string& language() const;
+  const std::string& title() const;
+  int track() const;
+
+  // First element is the container. Subsequent elements are the child streams.
+  const StreamInfoVector& stream_infos() const;
+
+  // Empty if Extract call did not request attached images, or if no attached
+  // images were found.
+  const std::vector<std::string>& attached_images_bytes() const;
+
+ private:
+  void ExtractDictionary(AVDictionary* metadata, TagDictionary* raw_tags);
+
+  bool extracted_;
+
+  int duration_;
+  int width_;
+  int height_;
+
+  std::string album_;
+  std::string artist_;
+  std::string comment_;
+  std::string copyright_;
+  std::string date_;
+  int disc_;
+  std::string encoder_;
+  std::string encoded_by_;
+  std::string genre_;
+  std::string language_;
+  int rotation_;
+  std::string title_;
+  int track_;
+
+  StreamInfoVector stream_infos_;
+
+  std::vector<std::string> attached_images_bytes_;
+
+  DISALLOW_COPY_AND_ASSIGN(AudioVideoMetadataExtractor);
+};
+
+}  // namespace media
+
+#endif  // MEDIA_BASE_AUDIO_VIDEO_METADATA_EXTRACTOR_H_