Start reporting watch time if ABR adapts above 200p.

media/blink/watch_time_reporter.h

 // Copyright 2016 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_WATCH_TIME_REPORTER_H_
 #define MEDIA_BLINK_WATCH_TIME_REPORTER_H_
 
 #include "base/callback.h"
 #include "base/power_monitor/power_observer.h"
 #include "base/time/time.h"
@@ skipping 85 matching lines @@
   // the video is shown or hidden respectively. OnHidden() will start background
   // watch time reporting if the media is audio+video.
   //
   // TODO(dalecurtis): At present, this is only called when the entire content
   // window goes into the foreground or background respectively; i.e. it does
   // not catch cases where the video is in the foreground but out of the view
   // port. We need a method for rejecting out of view port videos.
   void OnShown();
   void OnHidden();
 
+  // Returns true if the current size is large enough that watch time will be
+  // recorded for playback.
+  bool IsSizeLargeEnoughToReportWatchTime() const;
+
   // Setup the reporting interval to be immediate to avoid spinning real time
   // within the unit test.
   void set_reporting_interval_for_testing() {
     reporting_interval_ = base::TimeDelta();
   }
 
   void set_is_on_battery_power_for_testing(bool on_battery_power) {
     is_on_battery_power_ = on_battery_power;
   }
 
@@ skipping 68 matching lines @@
   // Special case reporter for handling background video watch time. Configured
   // as an audio only WatchTimeReporter with |is_background_| set to true.
   std::unique_ptr<WatchTimeReporter> background_reporter_;
 
   DISALLOW_COPY_AND_ASSIGN(WatchTimeReporter);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BLINK_WATCH_TIME_REPORTER_H_