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 50fe2ebca4ece288bff98a1135b8baa2d94a0966..b4f3b03de06aaaa0454b718ebe5e00492cff15e2 100644
--- a/media/gpu/android_video_decode_accelerator.cc
+++ b/media/gpu/android_video_decode_accelerator.cc
@@ -930,7 +930,7 @@ void AndroidVideoDecodeAccelerator::DecodeBuffer(
 
 void AndroidVideoDecodeAccelerator::RequestPictureBuffers() {
   if (client_) {
-    client_->ProvidePictureBuffers(kNumPictureBuffers, 1,
+    client_->ProvidePictureBuffers(kNumPictureBuffers, PIXEL_FORMAT_UNKNOWN, 1,
                                    strategy_->GetPictureBufferSize(),
                                    strategy_->GetTextureTarget());
   }