Chromecast: Add a way to notify video plane about resolution changes

chromecast/media/cma/backend/video_plane_fake.h

Index: chromecast/media/cma/backend/video_plane_fake.h
diff --git a/chromecast/media/cma/backend/video_plane_fake.h b/chromecast/media/cma/backend/video_plane_fake.h
index f809015673d1d8e9debd2fcd0af2a06a216bdd13..1cfe38c2991e5702fb5229401a11c02754992e82 100644
--- a/chromecast/media/cma/backend/video_plane_fake.h
+++ b/chromecast/media/cma/backend/video_plane_fake.h
@@ -6,7 +6,6 @@
 #define CHROMECAST_MEDIA_CMA_BACKEND_VIDEO_PLANE_FAKE_H_
 
 #include "base/macros.h"
-#include "base/memory/singleton.h"
 #include "chromecast/media/cma/backend/video_plane.h"
 
 namespace chromecast {
@@ -14,19 +13,14 @@ namespace media {
 
 class VideoPlaneFake : public VideoPlane {
  public:
-  static VideoPlaneFake* GetInstance();
+  VideoPlaneFake();
+  virtual ~VideoPlaneFake();
 
   // VideoPlane implementation.
-  gfx::Size GetVideoPlaneResolution() override;
+  gfx::Size GetScreenResolution() override;
   void SetGeometry(const gfx::QuadF& quad,
                    CoordinateType coordinate_type) override;
-
- private:
-  friend struct DefaultSingletonTraits<VideoPlaneFake>;
-  friend class Singleton<VideoPlaneFake>;
-
-  VideoPlaneFake();
-  virtual ~VideoPlaneFake();
+  void OnScreenResolutionChanged(const gfx::Size& screen_res) override;
 
   DISALLOW_COPY_AND_ASSIGN(VideoPlaneFake);
 };