cc: Replace render surface layer list with a render surface list

cc/trees/layer_tree_impl.h

Index: cc/trees/layer_tree_impl.h
diff --git a/cc/trees/layer_tree_impl.h b/cc/trees/layer_tree_impl.h
index 9dbaa2c020b4227dd368d51bd00b79cea188c9d5..c2a9b51682cde18994fb8af3244830edaa966fa7 100644
--- a/cc/trees/layer_tree_impl.h
+++ b/cc/trees/layer_tree_impl.h
@@ -293,7 +293,7 @@ class CC_EXPORT LayerTreeImpl {
 
   void set_ui_resource_request_queue(UIResourceRequestQueue queue);
 
-  const LayerImplList& RenderSurfaceLayerList() const;
+  const RenderSurfaceList& GetRenderSurfaceList() const;
   const Region& UnoccludedScreenSpaceRegion() const;
 
   // These return the size of the root scrollable area and the size of
@@ -542,9 +542,9 @@ class CC_EXPORT LayerTreeImpl {
   std::vector<PictureLayerImpl*> picture_layers_;
   LayerImplList surface_layers_;
 
-  // List of visible layers for the most recently prepared frame.
-  LayerImplList render_surface_layer_list_;
-  // After drawing the |render_surface_layer_list_| the areas in this region
+  // List of render surfaces for the most recently prepared frame.
+  RenderSurfaceList render_surface_list_;
+  // After drawing the |render_surface_list_| the areas in this region
   // would not be fully covered by opaque content.
   Region unoccluded_screen_space_region_;