Migrate content/common/gpu/media code to media/gpu

content/common/gpu/media/vp9_picture.cc

Index: content/common/gpu/media/vp9_picture.cc
diff --git a/content/common/gpu/media/vp9_picture.cc b/content/common/gpu/media/vp9_picture.cc
deleted file mode 100644
index 4b20316cabb38ad0c34476eb9b88f420d8968411..0000000000000000000000000000000000000000
--- a/content/common/gpu/media/vp9_picture.cc
+++ /dev/null
@@ -1,21 +0,0 @@
-// 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/vp9_picture.h"
-
-namespace content {
-
-VP9Picture::VP9Picture() {}
-
-VP9Picture::~VP9Picture() {}
-
-V4L2VP9Picture* VP9Picture::AsV4L2VP9Picture() {
-  return nullptr;
-}
-
-VaapiVP9Picture* VP9Picture::AsVaapiVP9Picture() {
-  return nullptr;
-}
-
-}  // namespace content