Added UMA metrics for MediaSourcePlayer and MediaCodecPlayer

media/base/android/media_codec_player.h

 // Copyright 2015 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_ANDROID_MEDIA_CODEC_PLAYER_H_
 #define MEDIA_BASE_ANDROID_MEDIA_CODEC_PLAYER_H_
 
 #include "base/android/scoped_java_ref.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/thread.h"
 #include "base/time/default_tick_clock.h"
 #include "media/base/android/demuxer_android.h"
 #include "media/base/android/media_drm_bridge.h"
 #include "media/base/android/media_player_android.h"
+#include "media/base/android/media_statistics.h"
 #include "media/base/demuxer_stream.h"
 #include "media/base/media_export.h"
 #include "media/base/time_delta_interpolator.h"
 #include "ui/gfx/geometry/size.h"
 #include "ui/gl/android/scoped_java_surface.h"
 
 // The MediaCodecPlayer class implements the media player by using Android's
 // MediaCodec. It differs from MediaSourcePlayer in that it removes most
 // processing away from the UI thread: it uses a dedicated Media thread to
 // receive the data and to handle the commands.
@@ skipping 376 matching lines @@
   int cdm_registration_id_;
 
   // The flag is set when the player receives the error from decoder that the
   // decoder needs a new decryption key. Cleared on starting the playback.
   bool key_is_required_;
 
   // The flag is set after the new encryption key is added to MediaDrm. Cleared
   // on starting the playback.
   bool key_is_added_;
 
+  // Gathers and reports playback quality statistics to UMA.
+  // Use pointer to enable replacement of this object for tests.
+  scoped_ptr<MediaStatistics> media_stat_;
+
   base::WeakPtr<MediaCodecPlayer> media_weak_this_;
   // NOTE: Weak pointers must be invalidated before all other member variables.
   base::WeakPtrFactory<MediaCodecPlayer> media_weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaCodecPlayer);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_ANDROID_MEDIA_CODEC_PLAYER_H_