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);
 
   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_;
@@ skipping 254 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_