Remove MediaFormat once and for all.

media/base/media_format.h

-// Copyright (c) 2011 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_MEDIA_FORMAT_H_
-#define MEDIA_BASE_MEDIA_FORMAT_H_
-
-#include <map>
-#include <string>
-
-#include "base/values.h"
-
-namespace media {
-
-// MediaFormat is used to describe the output of a Filter to determine whether
-// a downstream filter can accept the output from an upstream filter.
-//
-// For example, an audio decoder could output key-values for the number of
-// channels and the sample rate.  A downstream audio renderer would use this
-// information to properly initialize the audio hardware before playback
-// started.
-class MediaFormat {
- public:
-  // Common keys.
-  static const char kURL[];
-  static const char kSurfaceType[];
-  static const char kSurfaceFormat[];
-  static const char kSampleRate[];
-  static const char kSampleBits[];
-  static const char kChannels[];
-  static const char kWidth[];
-  static const char kHeight[];
-
-  MediaFormat();
-  ~MediaFormat();
-
-  // Basic map operations.
-  bool empty() const { return value_map_.empty(); }
-
-  bool Contains(const std::string& key) const;
-
-  void Clear();
-
-  // Value accessors.
-  void SetAsBoolean(const std::string& key, bool in_value);
-  void SetAsInteger(const std::string& key, int in_value);
-  void SetAsReal(const std::string& key, double in_value);
-  void SetAsString(const std::string& key, const std::string& in_value);
-
-  bool GetAsBoolean(const std::string& key, bool* out_value) const;
-  bool GetAsInteger(const std::string& key, int* out_value) const;
-  bool GetAsReal(const std::string& key, double* out_value) const;
-  bool GetAsString(const std::string& key, std::string* out_value) const;
-
-  bool operator==(MediaFormat const& other) const;
-
- private:
-  // Helper to return a value.
-  Value* GetValue(const std::string& key) const;
-
-  // Helper to release Value of the key
-  void ReleaseValue(const std::string& key);
-
-  typedef std::map<std::string, Value*> ValueMap;
-  ValueMap value_map_;
-
-  DISALLOW_COPY_AND_ASSIGN(MediaFormat);
-};
-
-}  // namespace media
-
-#endif  // MEDIA_BASE_MEDIA_FORMAT_H_