Store AVDACodecImage list in shared state, cleanup callers.

content/common/gpu/media/android_deferred_rendering_backing_strategy.h

Index: content/common/gpu/media/android_deferred_rendering_backing_strategy.h
diff --git a/content/common/gpu/media/android_deferred_rendering_backing_strategy.h b/content/common/gpu/media/android_deferred_rendering_backing_strategy.h
index 733b25b0a45a7685449bdb4cb00e2b4b3a45267e..2dc95ea9311f700ec4844290a30dd82b52fa932f 100644
--- a/content/common/gpu/media/android_deferred_rendering_backing_strategy.h
+++ b/content/common/gpu/media/android_deferred_rendering_backing_strategy.h
@@ -49,9 +49,7 @@ class CONTENT_EXPORT AndroidDeferredRenderingBackingStrategy
                                       const media::PictureBuffer&) override;
   void AssignOnePictureBuffer(const media::PictureBuffer&, bool) override;
   void ReuseOnePictureBuffer(const media::PictureBuffer&) override;
-  void CodecChanged(
-      media::VideoCodecBridge*,
-      const AndroidVideoDecodeAccelerator::OutputBufferMap&) override;
+  void CodecChanged(media::VideoCodecBridge*) override;
   void OnFrameAvailable() override;
   bool ArePicturesOverlayable() override;
   void UpdatePictureBufferSize(media::PictureBuffer* picture_buffer,
@@ -62,8 +60,9 @@ class CONTENT_EXPORT AndroidDeferredRenderingBackingStrategy
   // back to the codec.  It is okay if there is no such buffer.
   void ReleaseCodecBufferForPicture(const media::PictureBuffer& picture_buffer);
 
-  // Return the AVDACodecImage for a given PictureBuffer's texture.
-  AVDACodecImage* GetImageForPicture(const media::PictureBuffer&);
+  // Sets up the texture references (as found by |picture_buffer|), for the
+  // specified |image|. If |image| is null, clears any ref on the texture
+  // associated with |picture_buffer|.
   void SetImageForPicture(
       const media::PictureBuffer& picture_buffer,
       const scoped_refptr<gpu::gles2::GLStreamTextureImage>& image);