cc: Use visible_rect_for_tile_priority_ where approriate

cc/trees/layer_tree_impl.cc

Index: cc/trees/layer_tree_impl.cc
diff --git a/cc/trees/layer_tree_impl.cc b/cc/trees/layer_tree_impl.cc
index ea9c1d012f14c9097bbd0dd3b262de1dfe1696bc..2989555478e63cf3700cf029dcdee543cefa5d99 100644
--- a/cc/trees/layer_tree_impl.cc
+++ b/cc/trees/layer_tree_impl.cc
@@ -473,9 +473,7 @@ bool LayerTreeImpl::UpdateDrawProperties() {
                  source_frame_number_);
     LayerImpl* page_scale_layer =
         page_scale_layer_ ? page_scale_layer_ : InnerViewportContainerLayer();
-    bool can_render_to_separate_surface =
-        (layer_tree_host_impl_->GetDrawMode() !=
-         DRAW_MODE_RESOURCELESS_SOFTWARE);
+    bool can_render_to_separate_surface = !resourceless_software_draw();
 
     ++render_surface_layer_list_id_;
     LayerTreeHostCommon::CalcDrawPropsImplInputs inputs(
@@ -709,6 +707,11 @@ MemoryHistory* LayerTreeImpl::memory_history() const {
   return layer_tree_host_impl_->memory_history();
 }
 
+bool LayerTreeImpl::resourceless_software_draw() const {
+  return layer_tree_host_impl_->GetDrawMode() ==
+         DRAW_MODE_RESOURCELESS_SOFTWARE;
+}
+
 gfx::Size LayerTreeImpl::device_viewport_size() const {
   return layer_tree_host_impl_->device_viewport_size();
 }