Load CMA backend from shared library

chromecast/media/cma/ipc_streamer/decrypt_config_marshaller.h

Index: chromecast/media/cma/ipc_streamer/decrypt_config_marshaller.h
diff --git a/chromecast/media/cma/ipc_streamer/decrypt_config_marshaller.h b/chromecast/media/cma/ipc_streamer/decrypt_config_marshaller.h
index b600ba41c147e92e743f3a1c3fd25ffee7811d33..45c0fd7fb8618d932ec1f55f9d9a1c5ce7b7d8db 100644
--- a/chromecast/media/cma/ipc_streamer/decrypt_config_marshaller.h
+++ b/chromecast/media/cma/ipc_streamer/decrypt_config_marshaller.h
@@ -13,16 +13,16 @@ class DecryptConfig;
 
 namespace chromecast {
 namespace media {
+class DecryptConfig;
 class MediaMessage;
 
 class DecryptConfigMarshaller {
  public:
   // Writes the serialized structure of |config| into |msg|.
-  static void Write(
-      const ::media::DecryptConfig& config, MediaMessage* msg);
+  static void Write(const DecryptConfig& config, MediaMessage* msg);
 
   // Returns a DecryptConfig from its serialized structure.
-  static scoped_ptr< ::media::DecryptConfig> Read(MediaMessage* msg);
+  static scoped_ptr<DecryptConfig> Read(MediaMessage* msg);
 };
 
 }  // namespace media