Reland: Add accelerated VP9 decode infrastructure and an implementation for VA-API.

content/common/gpu/media/vp9_picture.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "content/common/gpu/media/vp8_picture.h"
+#include "content/common/gpu/media/vp9_picture.h"
 
 namespace content {
 
-VP8Picture::VP8Picture() {
-}
+VP9Picture::VP9Picture() {}
 
-VP8Picture::~VP8Picture() {
-}
+VP9Picture::~VP9Picture() {}
 
-V4L2VP8Picture* VP8Picture::AsV4L2VP8Picture() {
+V4L2VP9Picture* VP9Picture::AsV4L2VP9Picture() {
   return nullptr;
 }
 
-VaapiVP8Picture* VP8Picture::AsVaapiVP8Picture() {
+VaapiVP9Picture* VP9Picture::AsVaapiVP9Picture() {
   return nullptr;
 }
 
 }  // namespace content