fix canplaythrough

media/blink/webmediaplayer_impl.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_BLINK_WEBMEDIAPLAYER_IMPL_H_
 #define MEDIA_BLINK_WEBMEDIAPLAYER_IMPL_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 439 matching lines @@
   // Return the pipeline media duration or the value overridden by tests.
   base::TimeDelta GetPipelineMediaDuration() const;
 
   void ReportTimeFromForegroundToFirstFrame(base::TimeTicks foreground_time,
                                             base::TimeTicks new_frame_time);
 
   // Records |duration| to the appropriate metric based on whether we're
   // handling a src= or MSE based playback.
   void RecordUnderflowDuration(base::TimeDelta duration);
 
+  // Called by the data source when loading progresses.
+  // Can be called quite often.
+  void OnProgress();
+
+  // Returns true when we estimate that we can play the rest of the media
+  // without buffering.
+  bool CanPlayThrough();
+
   // Records |natural_size| to MediaLog and video height to UMA.
   void RecordVideoNaturalSize(const gfx::Size& natural_size);
 
+  // Takes ownership of |tick_clock|
+  void SetTickClockForTest(base::TickClock* tick_clock);
+
   blink::WebLocalFrame* frame_;
 
   // The playback state last reported to |delegate_|, to avoid setting duplicate
   // states.
   // TODO(sandersd): The delegate should be implementing deduplication.
   DelegateState delegate_state_;
   bool delegate_has_audio_;
 
   blink::WebMediaPlayer::NetworkState network_state_;
   blink::WebMediaPlayer::ReadyState ready_state_;
@@ skipping 104 matching lines @@
   //   |chunk_demuxer_| is used for Media Source resource loads.
   //
   // |demuxer_| will contain the appropriate demuxer based on which resource
   // load strategy we're using.
   std::unique_ptr<MultibufferDataSource> data_source_;
   std::unique_ptr<Demuxer> demuxer_;
   ChunkDemuxer* chunk_demuxer_;
 
   std::unique_ptr<base::MemoryPressureListener> memory_pressure_listener_;
 
+  std::unique_ptr<base::TickClock> tick_clock_;
+
   BufferedDataSourceHostImpl buffered_data_source_host_;
   linked_ptr<UrlIndex> url_index_;
 
   // Video rendering members.
   scoped_refptr<base::SingleThreadTaskRunner> compositor_task_runner_;
   VideoFrameCompositor* compositor_;  // Deleted on |compositor_task_runner_|.
   SkCanvasVideoRenderer skcanvas_video_renderer_;
 
   // The compositor layer for displaying the video content when using composited
   // playback.
@@ skipping 81 matching lines @@
   // Elapsed time since we've last reached BUFFERING_HAVE_NOTHING.
   std::unique_ptr<base::ElapsedTimer> underflow_timer_;
 
   // Used to track loading progress, used by IsPrerollAttemptNeeded().
   // |preroll_attempt_pending_| indicates that the clock has been reset
   // (awaiting a resume to start), while |preroll_attempt_start_time_| tracks
   // when a preroll attempt began.
   bool preroll_attempt_pending_;
   base::TimeTicks preroll_attempt_start_time_;
 
-  std::unique_ptr<base::TickClock> tick_clock_;
-
   // Monitors the player events.
   base::WeakPtr<MediaObserver> observer_;
 
   // The maximum video keyframe distance that allows triggering background
   // playback optimizations (non-MSE).
   base::TimeDelta max_keyframe_distance_to_disable_background_video_;
 
   // The maximum video keyframe distance that allows triggering background
   // playback optimizations (MSE).
   base::TimeDelta max_keyframe_distance_to_disable_background_video_mse_;
@@ skipping 32 matching lines @@
   base::CancelableCallback<void(base::TimeTicks)> frame_time_report_cb_;
 
   bool initial_video_height_recorded_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(WebMediaPlayerImpl);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BLINK_WEBMEDIAPLAYER_IMPL_H_