Convert //cc from scoped_ptr to std::unique_ptr.

cc/debug/rendering_stats.h

Index: cc/debug/rendering_stats.h
diff --git a/cc/debug/rendering_stats.h b/cc/debug/rendering_stats.h
index a99d28d964a8c5731777318e3511811d18de5104..f12d1235982fb37c39ecfb5913bd89db2b95f29c 100644
--- a/cc/debug/rendering_stats.h
+++ b/cc/debug/rendering_stats.h
@@ -7,9 +7,9 @@
 
 #include <stdint.h>
 
+#include <memory>
 #include <vector>
 
-#include "base/memory/scoped_ptr.h"
 #include "base/time/time.h"
 #include "base/trace_event/trace_event_argument.h"
 #include "base/values.h"
@@ -59,7 +59,7 @@ struct CC_EXPORT RenderingStats {
   TimeDeltaList commit_to_activate_duration;
   TimeDeltaList commit_to_activate_duration_estimate;
 
-  scoped_ptr<base::trace_event::ConvertableToTraceFormat> AsTraceableData()
+  std::unique_ptr<base::trace_event::ConvertableToTraceFormat> AsTraceableData()
       const;
   void Add(const RenderingStats& other);
 };