Convert //chromecast from scoped_ptr to std::unique_ptr

chromecast/browser/media/media_pipeline_backend_factory.h

Index: chromecast/browser/media/media_pipeline_backend_factory.h
diff --git a/chromecast/browser/media/media_pipeline_backend_factory.h b/chromecast/browser/media/media_pipeline_backend_factory.h
index e624623226f5841898dd4626812ad129467d86e0..9f59bb9af7fe5104085ae779e910b9d704b836be 100644
--- a/chromecast/browser/media/media_pipeline_backend_factory.h
+++ b/chromecast/browser/media/media_pipeline_backend_factory.h
@@ -5,15 +5,16 @@
 #ifndef CHROMECAST_BROWSER_MEDIA_MEDIA_PIPELINE_BACKEND_FACTORY_H_
 #define CHROMECAST_BROWSER_MEDIA_MEDIA_PIPELINE_BACKEND_FACTORY_H_
 
+#include <memory>
+
 #include "base/callback.h"
-#include "base/memory/scoped_ptr.h"
 #include "chromecast/public/media/media_pipeline_backend.h"
 #include "chromecast/public/media/media_pipeline_device_params.h"
 
 namespace chromecast {
 namespace media {
 
-typedef base::Callback<scoped_ptr<MediaPipelineBackend>(
+typedef base::Callback<std::unique_ptr<MediaPipelineBackend>(
     const MediaPipelineDeviceParams&)>
     CreateMediaPipelineBackendCB;