Add content API CreateVideoEncodeAccelerator.

content/public/renderer/video_encode_accelerator.cc

+// 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.
+
+#include "content/public/renderer/video_encode_accelerator.h"
+
+#include "content/renderer/render_thread_impl.h"
+
+namespace content {
+
+scoped_ptr<media::VideoEncodeAccelerator>
+CreateVideoEncodeAccelerator(media::VideoEncodeAccelerator::Client* client) {
+  scoped_ptr<media::VideoEncodeAccelerator> vea;
+
+  scoped_refptr<RendererGpuVideoAcceleratorFactories> gpu_factories =
+        RenderThreadImpl::current()->GetGpuFactories();
+  if (gpu_factories.get())
+    vea = gpu_factories->CreateVideoEncodeAccelerator(client).Pass();
+
+  return vea.Pass();
+}
+
+}  // namespace content