cc: Early out of UpdateTiles for resoureceless draw

cc/layers/picture_layer_impl.h

Index: cc/layers/picture_layer_impl.h
diff --git a/cc/layers/picture_layer_impl.h b/cc/layers/picture_layer_impl.h
index 8a2465a15bc380c240027b54323e4757fb50f998..bcfde78485499c104c40a621d0a6604379664a0f 100644
--- a/cc/layers/picture_layer_impl.h
+++ b/cc/layers/picture_layer_impl.h
@@ -162,9 +162,7 @@ class CC_EXPORT PictureLayerImpl
   // software draws can have wildly different transforms/viewports from regular
   // draws. Save a copy of the required draw properties of the last frame that
   // has a valid viewport for prioritizing tiles.
-  gfx::Rect visible_rect_for_tile_priority_;
   gfx::Rect viewport_rect_for_tile_priority_in_content_space_;
-  gfx::Transform screen_space_transform_for_tile_priority_;
 
   gfx::Size gpu_raster_max_texture_size_;