Start reporting watch time if ABR adapts above 200p.

media/blink/watch_time_reporter.h

Index: media/blink/watch_time_reporter.h
diff --git a/media/blink/watch_time_reporter.h b/media/blink/watch_time_reporter.h
index 8290bdc1b04807003620dbae5eb903040d40a69d..9b3b93bf41890581f05820c2105bd15a7e734045 100644
--- a/media/blink/watch_time_reporter.h
+++ b/media/blink/watch_time_reporter.h
@@ -103,6 +103,10 @@ class MEDIA_BLINK_EXPORT WatchTimeReporter : base::PowerObserver {
   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() {