Force the video to go fullscreen when setting persistent video

content/renderer/media/webmediaplayer_ms.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 CONTENT_RENDERER_MEDIA_WEBMEDIAPLAYER_MS_H_
 #define CONTENT_RENDERER_MEDIA_WEBMEDIAPLAYER_MS_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 133 matching lines @@
   size_t videoDecodedByteCount() const override;
 
   // WebMediaPlayerDelegate::Observer implementation.
   void OnFrameHidden() override;
   void OnFrameClosed() override;
   void OnFrameShown() override;
   void OnIdleTimeout() override;
   void OnPlay() override;
   void OnPause() override;
   void OnVolumeMultiplierUpdate(double multiplier) override;
+  void OnBecamePersistentVideo(bool value) override;
 
   bool copyVideoTextureToPlatformTexture(gpu::gles2::GLES2Interface* gl,
                                          unsigned int texture,
                                          bool premultiply_alpha,
                                          bool flip_y) override;
 
   bool texImageImpl(TexImageFunctionID functionID,
                     unsigned target,
                     gpu::gles2::GLES2Interface* gl,
                     int level,
@@ skipping 93 matching lines @@
   // True if playback should be started upon the next call to OnShown(). Only
   // used on Android.
   bool should_play_upon_shown_;
 
   DISALLOW_COPY_AND_ASSIGN(WebMediaPlayerMS);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_WEBMEDIAPLAYER_MS_H_