Start using deferred rendering for WebView on L.

content/common/gpu/media/android_video_decode_accelerator.h

Index: content/common/gpu/media/android_video_decode_accelerator.h
diff --git a/content/common/gpu/media/android_video_decode_accelerator.h b/content/common/gpu/media/android_video_decode_accelerator.h
index ab2c4da815e9d92c4c8747b7b68feea2295b87e5..da2d266280225fa4de92396c76e07621d17325b2 100644
--- a/content/common/gpu/media/android_video_decode_accelerator.h
+++ b/content/common/gpu/media/android_video_decode_accelerator.h
@@ -220,6 +220,14 @@ class CONTENT_EXPORT AndroidVideoDecodeAccelerator
   // Return true if and only if we should use deferred rendering.
   static bool UseDeferredRenderingStrategy();
 
+  // Return true if and only if the deferred strategy requires that the
+  // resulting VideoFrames have COPY_REQUIRED set.  This is for WebView.
+  static bool DeferredStrategyNeedsBrowserCopy();
+
+  // Return true if and only if SurfaceTexture supports user-provided threads
+  // for OnFrameAvailable callbacks.
+  static bool IsCallbackThreadable();
+
   // Used to DCHECK that we are called on the correct thread.
   base::ThreadChecker thread_checker_;