Replace scoped_ptr with std::unique_ptr in //media/base.

media/renderers/default_renderer_factory.h

Index: media/renderers/default_renderer_factory.h
diff --git a/media/renderers/default_renderer_factory.h b/media/renderers/default_renderer_factory.h
index e701014671693d895a0b1dcb0aeb6c98c6aa1527..3163d531de26df1565927e2bb5a88e8670344cec 100644
--- a/media/renderers/default_renderer_factory.h
+++ b/media/renderers/default_renderer_factory.h
@@ -5,6 +5,8 @@
 #ifndef MEDIA_RENDERERS_DEFAULT_RENDERER_FACTORY_H_
 #define MEDIA_RENDERERS_DEFAULT_RENDERER_FACTORY_H_
 
+#include <memory>
+
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/scoped_vector.h"
@@ -33,7 +35,7 @@ class MEDIA_EXPORT DefaultRendererFactory : public RendererFactory {
                          const AudioHardwareConfig& audio_hardware_config);
   ~DefaultRendererFactory() final;
 
-  scoped_ptr<Renderer> CreateRenderer(
+  std::unique_ptr<Renderer> CreateRenderer(
       const scoped_refptr<base::SingleThreadTaskRunner>& media_task_runner,
       const scoped_refptr<base::TaskRunner>& worker_task_runner,
       AudioRendererSink* audio_renderer_sink,