cc: Clear always_use_active_tree_opacity_effect_ids

cc/trees/property_tree_builder.cc

Index: cc/trees/property_tree_builder.cc
diff --git a/cc/trees/property_tree_builder.cc b/cc/trees/property_tree_builder.cc
index 7343b242fad6609a304c34339e574f89fbb757d3..3e785ebb1f5bed1e1660d641bef2264d83809045 100644
--- a/cc/trees/property_tree_builder.cc
+++ b/cc/trees/property_tree_builder.cc
@@ -1230,6 +1230,8 @@ void BuildPropertyTreesTopLevelInternal(
   data_for_recursion.property_trees->effect_id_to_index_map.clear();
   data_for_recursion.property_trees->clip_id_to_index_map.clear();
   data_for_recursion.property_trees->scroll_id_to_index_map.clear();
+  data_for_recursion.property_trees->always_use_active_tree_opacity_effect_ids
+      .clear();

[jaydasika, 2016/06/07 04:17:35]

I think all clearing code should go into a single method inside property trees
class so that such bugs don't happen again. Will do that in a follow up.

 
   ClipNode root_clip;
   root_clip.data.resets_clip = true;