Add content API CreateVideoEncodeAccelerator.

content/public/renderer/video_encode_accelerator.h

+// Copyright 2014 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_PUBLIC_RENDERER_VIDEO_ENCODE_ACCELERATOR_H_
+#define CONTENT_PUBLIC_RENDERER_VIDEO_ENCODE_ACCELERATOR_H_
+
+#include "base/memory/scoped_ptr.h"
+#include "content/common/content_export.h"
+#include "media/video/video_encode_accelerator.h"
+
+namespace content {
+
+// Generate an instance of media::VideoEncodeAccelerator.
+CONTENT_EXPORT scoped_ptr<media::VideoEncodeAccelerator>
+CreateVideoEncodeAccelerator(media::VideoEncodeAccelerator::Client* client);
+
+}  // namespace content
+
+#endif  // CONTENT_PUBLIC_RENDERER_VIDEO_ENCODE_ACCELERATOR_H_