[Blink>Media] Add heuristic for dominant video detection for Android

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 166 matching lines @@
   blink::WebAudioSourceProvider* getAudioSourceProvider() override;
 
   void setContentDecryptionModule(
       blink::WebContentDecryptionModule* cdm,
       blink::WebContentDecryptionModuleResult result) override;
 
   bool supportsOverlayFullscreenVideo() override;
   void enteredFullscreen() override;
   void exitedFullscreen() override;
   void becameDominantVisibleContent(bool isDominant) override;
+  void setIsEffectivelyFullscreen(bool isEffectivelyFullscreen) override;
 
   void setPoster(const blink::WebURL& poster) override;
 
   // WebMediaPlayerDelegate::Observer implementation.
   void OnFrameHidden() override;
   void OnFrameClosed() override;
   void OnFrameShown() override;
   void OnIdleTimeout() override;
   void OnPlay() override;
   void OnPause() override;
@@ skipping 505 matching lines @@
 
   // Pipeline media duration overridden by tests.
   base::Optional<base::TimeDelta> pipeline_media_duration_for_test_;
 
   DISALLOW_COPY_AND_ASSIGN(WebMediaPlayerImpl);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BLINK_WEBMEDIAPLAYER_IMPL_H_