Introduce media::RendererFactory interface.

media/mojo/services/mojo_renderer_factory.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 "media/mojo/services/mojo_renderer_factory.h"
+
+#include "base/single_thread_task_runner.h"
+#include "media/mojo/interfaces/media_renderer.mojom.h"
+#include "media/mojo/services/mojo_renderer_impl.h"
+#include "mojo/public/cpp/application/connect.h"
+
+namespace media {
+
+MojoRendererFactory::MojoRendererFactory(
+    mojo::ServiceProviderPtr renderer_service_provider)
+    : renderer_service_provider_(renderer_service_provider.Pass()) {
+}
+
+MojoRendererFactory::~MojoRendererFactory() {
+}
+
+scoped_ptr<Renderer> MojoRendererFactory::CreateRenderer(
+    const scoped_refptr<base::SingleThreadTaskRunner>& media_task_runner,
+    AudioRendererSink* /* audio_renderer_sink */) {
+  DCHECK(renderer_service_provider_.get());
+  mojo::MediaRendererPtr mojo_media_renderer;
+  mojo::ConnectToService(renderer_service_provider_.get(),
+                         &mojo_media_renderer);
+  return scoped_ptr<Renderer>(
+      new MojoRendererImpl(media_task_runner, mojo_media_renderer.Pass()));
+}
+
+}  // namespace media