Convert //media/filters from scoped_ptr to std::unique_ptr

media/filters/pipeline_controller.h

Index: media/filters/pipeline_controller.h
diff --git a/media/filters/pipeline_controller.h b/media/filters/pipeline_controller.h
index f5cb6a16ac87a2ff4e92b610e869c3481c5c98e0..2993feda180f10697d9e87c65d7ddbac23e26fe4 100644
--- a/media/filters/pipeline_controller.h
+++ b/media/filters/pipeline_controller.h
@@ -38,7 +38,7 @@ class MEDIA_EXPORT PipelineController {
     RESUMING,
   };
 
-  using RendererFactoryCB = base::Callback<scoped_ptr<Renderer>(void)>;
+  using RendererFactoryCB = base::Callback<std::unique_ptr<Renderer>(void)>;
   using SeekedCB = base::Callback<void(bool time_updated)>;
   using SuspendedCB = base::Callback<void()>;