Added UMA metrics for MediaSourcePlayer and MediaCodecPlayer

media/base/android/audio_decoder_job.h

 // Copyright 2013 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_AUDIO_DECODER_JOB_H_
 #define MEDIA_BASE_ANDROID_AUDIO_DECODER_JOB_H_
 
 #include <jni.h>
 #include <vector>
 
 #include "base/callback.h"
 #include "media/base/android/media_decoder_job.h"
 
 namespace media {
 
 class AudioCodecBridge;
 class AudioTimestampHelper;
 
 // Class for managing audio decoding jobs.
 class AudioDecoderJob : public MediaDecoderJob {
  public:
   // Creates a new AudioDecoderJob instance for decoding audio.
   // |request_data_cb| - Callback used to request more data for the decoder.
   // |on_demuxer_config_changed_cb| - Callback used to inform the caller that
   // demuxer config has changed.
   AudioDecoderJob(const base::Closure& request_data_cb,
-                  const base::Closure& on_demuxer_config_changed_cb);
+                  const base::Closure& on_demuxer_config_changed_cb,
+                  FrameStatistics* frame_statistics);
   ~AudioDecoderJob() override;
 
   // MediaDecoderJob implementation.
   bool HasStream() const override;
   void Flush() override;
   void SetDemuxerConfigs(const DemuxerConfigs& configs) override;
 
   // Sets the volume of the audio output.
   void SetVolume(double volume);
 
@@ skipping 34 matching lines @@
 
   // Frame count to sync with audio codec output
   int64 frame_count_;
 
   // Base timestamp for the |audio_timestamp_helper_|.
   base::TimeDelta base_timestamp_;
 
   // Object to calculate the current audio timestamp for A/V sync.
   scoped_ptr<AudioTimestampHelper> audio_timestamp_helper_;
 
+  // The time limit for the next frame to avoid underrun.
+  base::TimeTicks next_frame_time_limit_;
+
   DISALLOW_COPY_AND_ASSIGN(AudioDecoderJob);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_ANDROID_AUDIO_DECODER_JOB_H_