Plumb decoded video pixel format from GPU process to renderer.

media/gpu/android_video_decode_accelerator.cc

Index: media/gpu/android_video_decode_accelerator.cc
diff --git a/media/gpu/android_video_decode_accelerator.cc b/media/gpu/android_video_decode_accelerator.cc
index 3b84521d0f9d7076d9a4477d6dc5ab32cffef6f6..3f1f99b310907128867d9036fc35eb5067df1915 100644
--- a/media/gpu/android_video_decode_accelerator.cc
+++ b/media/gpu/android_video_decode_accelerator.cc
@@ -882,7 +882,7 @@ void AndroidVideoDecodeAccelerator::DecodeBuffer(
 
 void AndroidVideoDecodeAccelerator::RequestPictureBuffers() {
   if (client_) {
-    client_->ProvidePictureBuffers(kNumPictureBuffers, 1,
+    client_->ProvidePictureBuffers(kNumPictureBuffers, PIXEL_FORMAT_UNKNOWN, 1,
                                    strategy_->GetPictureBufferSize(),
                                    strategy_->GetTextureTarget());
   }