Replace many skia::RefPtr with sk_sp<> in cc/

cc/layers/picture_image_layer_unittest.cc

Index: cc/layers/picture_image_layer_unittest.cc
diff --git a/cc/layers/picture_image_layer_unittest.cc b/cc/layers/picture_image_layer_unittest.cc
index 434106b25e7eb92e81972f1cdc5c3afe8cfb35a0..0f0c53461c810e1f55d66b0936db83bc04af8402 100644
--- a/cc/layers/picture_image_layer_unittest.cc
+++ b/cc/layers/picture_image_layer_unittest.cc
@@ -38,9 +38,8 @@ TEST(PictureImageLayerTest, PaintContentsToDisplayList) {
   image_canvas->drawRectCoords(0.f, 0.f, 100.f, 100.f, blue_paint);
   image_canvas->drawRectCoords(100.f, 100.f, 200.f, 200.f, blue_paint);
 
-  skia::RefPtr<const SkImage> image =
-      skia::AdoptRef(image_surface->newImageSnapshot());
-  layer->SetImage(std::move(image));
+  sk_sp<const SkImage> image(image_surface->makeImageSnapshot());
+  layer->SetImage(skia::SharePtr(image));

[f(malita), 2016/04/21 15:45:46]

I think the new version introduces extra churn: SharePtr takes a new sk_sp value
(while AdoptRef would just steal the rval ref).  Inlining (or prev AdoptRef +
move) should avoid that:

  layer->SetImage(skia::AdoptRef(image_surface->makeImageSnapshot()));

[tomhudson, 2016/04/25 20:20:50]

Done.

   layer->SetBounds(gfx::Size(layer_rect.width(), layer_rect.height()));
 
   scoped_refptr<DisplayItemList> display_list =