cc : Compute visible rects dynamically (1)

cc/trees/layer_tree_settings.h

Index: cc/trees/layer_tree_settings.h
diff --git a/cc/trees/layer_tree_settings.h b/cc/trees/layer_tree_settings.h
index c4e063d4e5ff35fdb0cd6b583d8a485f66b3233e..10b6e67f9213d008632241227c9fcfb0adfd8c06 100644
--- a/cc/trees/layer_tree_settings.h
+++ b/cc/trees/layer_tree_settings.h
@@ -90,6 +90,7 @@ class CC_EXPORT LayerTreeSettings {
   bool use_occlusion_for_tile_prioritization = false;
   bool verify_clip_tree_calculations = false;
   bool verify_transform_tree_calculations = false;
+  bool verify_visible_rect_calculations = false;
   bool image_decode_tasks_enabled = false;
   bool abort_commit_before_compositor_frame_sink_creation = true;
   bool use_layer_lists = false;