Add accelerated video decoder interface, VP8 and H.264 implementations and hook up to V4L2SVDA.

content/common/gpu/media/vp8_picture.cc

Index: content/common/gpu/media/vp8_picture.cc
diff --git a/content/common/gpu/media/vp8_picture.cc b/content/common/gpu/media/vp8_picture.cc
new file mode 100644
index 0000000000000000000000000000000000000000..764c3b1bd739a88810bbcb1ca47dbafec9c036e0
--- /dev/null
+++ b/content/common/gpu/media/vp8_picture.cc
@@ -0,0 +1,19 @@
+// 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"
+
+namespace content {
+
+VP8Picture::VP8Picture() {
+}
+
+VP8Picture::~VP8Picture() {
+}
+
+V4L2VP8Picture* VP8Picture::AsV4L2VP8Picture() {
+  return nullptr;
+}
+
+}  // namespace content