ReleaseOutputBuffer to surface back and front buffers where possible.

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 9e0d8ab9546e02b2818074abe01c6e3af95fb9c9..af2f7b70c05f26efafa2a1fb6bb1dfb79661b39e 100644
--- a/content/common/gpu/media/android_video_decode_accelerator.h
+++ b/content/common/gpu/media/android_video_decode_accelerator.h
@@ -87,6 +87,9 @@ class CONTENT_EXPORT AndroidVideoDecodeAccelerator
     virtual void ReuseOnePictureBuffer(
         const media::PictureBuffer& picture_buffer) {}
 
+    // Attempts to free up codec output buffers by rendering early.
+    virtual void MaybeRenderEarly() {}
+
     // Notify strategy that we have a new android MediaCodec instance.  This
     // happens when we're starting up or re-configuring mid-stream.  Any
     // previously provided codec should no longer be referenced.