Revert of Revert of Chromecast: Play audio streams not supported by CMA via default renderer

chromecast/renderer/media/chromecast_media_renderer_factory.h

Index: chromecast/renderer/media/chromecast_media_renderer_factory.h
diff --git a/chromecast/renderer/media/chromecast_media_renderer_factory.h b/chromecast/renderer/media/chromecast_media_renderer_factory.h
new file mode 100644
index 0000000000000000000000000000000000000000..f880ff6c746ca2d6cc6324c1afef5faf8f9be0a2
--- /dev/null
+++ b/chromecast/renderer/media/chromecast_media_renderer_factory.h
@@ -0,0 +1,43 @@
+// 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 CHROMECAST_RENDERER_MEDIA_CHROMECAST_MEDIA_RENDERER_FACTORY_H_
+#define CHROMECAST_RENDERER_MEDIA_CHROMECAST_MEDIA_RENDERER_FACTORY_H_
+
+#include "base/macros.h"
+#include "base/memory/ref_counted.h"
+#include "media/base/renderer_factory.h"
+
+namespace media {
+class MediaLog;
+class DefaultRendererFactory;
+}
+
+namespace chromecast {
+namespace media {
+
+class ChromecastMediaRendererFactory : public ::media::RendererFactory {
+ public:
+  ChromecastMediaRendererFactory(
+      const scoped_refptr<::media::MediaLog>& media_log,
+      int render_frame_id);
+  ~ChromecastMediaRendererFactory() final;
+
+  // ::media::RendererFactory implementation.
+  scoped_ptr<::media::Renderer> CreateRenderer(
+      const scoped_refptr<base::SingleThreadTaskRunner>& media_task_runner,
+      ::media::AudioRendererSink* audio_renderer_sink) final;
+
+ private:
+  int render_frame_id_;
+  scoped_refptr<::media::MediaLog> media_log_;
+  scoped_ptr<::media::DefaultRendererFactory> default_render_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(ChromecastMediaRendererFactory);
+};
+
+}  // namespace media
+}  // namespace chromecast
+
+#endif  // CHROMECAST_RENDERER_MEDIA_CHROMECAST_MEDIA_RENDERER_FACTORY_H_