Move scaling of ui resources for scrollbars to the time of upload

cc/test/fake_ui_resource_layer_tree_host_impl.cc

Index: cc/test/fake_ui_resource_layer_tree_host_impl.cc
diff --git a/cc/test/fake_ui_resource_layer_tree_host_impl.cc b/cc/test/fake_ui_resource_layer_tree_host_impl.cc
index 8d744df94a0db3bf80a1cc1c5bad67508b98e35d..dd54a2cf5596759a620c83e705fa8a661dbe3459 100644
--- a/cc/test/fake_ui_resource_layer_tree_host_impl.cc
+++ b/cc/test/fake_ui_resource_layer_tree_host_impl.cc
@@ -28,7 +28,6 @@ void FakeUIResourceLayerTreeHostImpl::CreateUIResource(
       bitmap.GetSize(), ResourceProvider::TEXTURE_HINT_IMMUTABLE, RGBA_8888,
       gfx::ColorSpace());
 
-  data.size = bitmap.GetSize();
   data.opaque = bitmap.GetOpaque();
   fake_ui_resource_map_[uid] = data;
 }