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

cc/debug/frame_viewer_instrumentation.cc

Index: cc/debug/frame_viewer_instrumentation.cc
diff --git a/cc/debug/frame_viewer_instrumentation.cc b/cc/debug/frame_viewer_instrumentation.cc
index 5181aa89c91f21cfe2addfe35ba8595d628e8fe3..d34907a8746f04bcd29a2e0efff9d0d58b8f8dd2 100644
--- a/cc/debug/frame_viewer_instrumentation.cc
+++ b/cc/debug/frame_viewer_instrumentation.cc
@@ -26,12 +26,12 @@ const char kSourceFrameNumber[] = "sourceFrameNumber";
 const char kAnalyzeTask[] = "AnalyzeTask";
 const char kRasterTask[] = "RasterTask";
 
-scoped_ptr<base::trace_event::ConvertableToTraceFormat> TileDataAsValue(
+std::unique_ptr<base::trace_event::ConvertableToTraceFormat> TileDataAsValue(
     const void* tile_id,
     TileResolution tile_resolution,
     int source_frame_number,
     int layer_id) {
-  scoped_ptr<base::trace_event::TracedValue> res(
+  std::unique_ptr<base::trace_event::TracedValue> res(
       new base::trace_event::TracedValue());
   TracedValue::SetIDRef(tile_id, res.get(), kTileId);
   res->SetString(kTileResolution, TileResolutionToString(tile_resolution));