Add VideoImageGenerator.

media/filters/skcanvas_video_renderer.h

Index: media/filters/skcanvas_video_renderer.h
diff --git a/media/filters/skcanvas_video_renderer.h b/media/filters/skcanvas_video_renderer.h
index 3d1f4da56f76ef31b546b581bd1c85ca5ecdb2ee..79400b09474be2054daed5b042f00bcd83ad2659 100644
--- a/media/filters/skcanvas_video_renderer.h
+++ b/media/filters/skcanvas_video_renderer.h
@@ -5,6 +5,7 @@
 #ifndef MEDIA_FILTERS_SKCANVAS_VIDEO_RENDERER_H_
 #define MEDIA_FILTERS_SKCANVAS_VIDEO_RENDERER_H_
 
+#include "base/memory/ref_counted.h"
 #include "base/time/time.h"
 #include "media/base/media_export.h"
 #include "media/base/video_rotation.h"
@@ -29,7 +30,7 @@ class MEDIA_EXPORT SkCanvasVideoRenderer {
   // specified by |dest_rect|.
   //
   // Black will be painted on |canvas| if |video_frame| is null.
-  void Paint(media::VideoFrame* video_frame,
+  void Paint(const scoped_refptr<VideoFrame>& video_frame,
              SkCanvas* canvas,
              const gfx::RectF& dest_rect,
              uint8 alpha,
@@ -37,7 +38,7 @@ class MEDIA_EXPORT SkCanvasVideoRenderer {
              VideoRotation video_rotation);
 
   // Copy |video_frame| on |canvas|.
-  void Copy(media::VideoFrame* video_frame, SkCanvas* canvas);
+  void Copy(const scoped_refptr<VideoFrame>&, SkCanvas* canvas);
 
  private:
   // An RGB bitmap and corresponding timestamp of the previously converted