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

content/common/gpu/media/vp9_picture.h

+// 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.
+
+#ifndef CONTENT_COMMON_GPU_MEDIA_VP9_PICTURE_H_
+#define CONTENT_COMMON_GPU_MEDIA_VP9_PICTURE_H_
+
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "media/filters/vp9_parser.h"
+
+namespace content {
+
+class V4L2VP9Picture;
+class VaapiVP9Picture;
+
+class VP9Picture : public base::RefCounted<VP9Picture> {
+ public:
+  VP9Picture();
+
+  virtual V4L2VP9Picture* AsV4L2VP9Picture();
+  virtual VaapiVP9Picture* AsVaapiVP9Picture();
+
+  scoped_ptr<media::Vp9FrameHeader> frame_hdr;
+
+ protected:
+  friend class base::RefCounted<VP9Picture>;
+  virtual ~VP9Picture();
+
+  DISALLOW_COPY_AND_ASSIGN(VP9Picture);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_COMMON_GPU_MEDIA_VP9_PICTURE_H_