Moves video frame callbacks from VideoFrameCompositor to Renderer.

media/base/pipeline.h

Index: media/base/pipeline.h
diff --git a/media/base/pipeline.h b/media/base/pipeline.h
index 18c6b3f9fce61cf435091c4c6915ad7771fc5b5b..0a909608b51f235d973703d5b7927b13b3c181cf 100644
--- a/media/base/pipeline.h
+++ b/media/base/pipeline.h
@@ -56,6 +56,12 @@ class MEDIA_EXPORT Pipeline {
 
     // Executed whenever the key needed to decrypt the stream is not available.
     virtual void OnWaitingForDecryptionKey() = 0;
+
+    // Executed for the first video frame and whenever natural size changes.
+    virtual void OnVideoNaturalSizeChange(const gfx::Size& size) = 0;
+
+    // Executed for the first video frame and whenever opacity changes.
+    virtual void OnVideoOpacityChange(bool opaque) = 0;
   };
 
   virtual ~Pipeline() {}