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

cc/tiles/picture_layer_tiling_perftest.cc

Index: cc/tiles/picture_layer_tiling_perftest.cc
diff --git a/cc/tiles/picture_layer_tiling_perftest.cc b/cc/tiles/picture_layer_tiling_perftest.cc
index f612f39ca4ee3267cd12ca0131989b1af0559132..38dde070cc27d96bb30f7c237929b34b5637f953 100644
--- a/cc/tiles/picture_layer_tiling_perftest.cc
+++ b/cc/tiles/picture_layer_tiling_perftest.cc
@@ -124,15 +124,15 @@ class PictureLayerTilingPerfTest : public testing::Test {
 
  private:
   FakePictureLayerTilingClient picture_layer_tiling_client_;
-  scoped_ptr<PictureLayerTiling> picture_layer_tiling_;
+  std::unique_ptr<PictureLayerTiling> picture_layer_tiling_;
 
   LapTimer timer_;
 
   scoped_refptr<ContextProvider> context_provider_;
   FakeOutputSurfaceClient output_surface_client_;
-  scoped_ptr<FakeOutputSurface> output_surface_;
-  scoped_ptr<SharedBitmapManager> shared_bitmap_manager_;
-  scoped_ptr<ResourceProvider> resource_provider_;
+  std::unique_ptr<FakeOutputSurface> output_surface_;
+  std::unique_ptr<SharedBitmapManager> shared_bitmap_manager_;
+  std::unique_ptr<ResourceProvider> resource_provider_;
 };
 
 TEST_F(PictureLayerTilingPerfTest, Invalidate) {