Compute if a layer is clipped outside CalcDrawProps

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 28ad43f309111ac26e9eb433bc3e5acaf11f6500..109a3419fbc2c008ff62d6f615d2331e46114619 100644
--- a/cc/trees/property_tree_builder.cc
+++ b/cc/trees/property_tree_builder.cc
@@ -145,6 +145,12 @@ void AddClipNodeIfNeeded(const DataForRecursion<LayerType>& data_from_ancestor,
   layer->SetClipTreeIndex(
       has_unclipped_surface ? 0 : data_for_children->clip_tree_parent);
 
+  // TODO(jaydasika): This value depends on whether a layer has a render

[weiliangc, 2015/07/07 15:54:02]

Thanks for this. :) Could you also add crbug.com/504467 to the comments?

[jaydasika, 2015/07/07 18:35:28]

Done.

+  // surface or not. When building property trees becomes independant of
+  // render surfaces, this should move.
+  layer->draw_properties().is_clipped_from_property_trees =
+      data_for_children->ancestor_clips_subtree;
+
   // TODO(awoloszyn): Right now when we hit a node with a replica, we reset the
   // clip for all children since we may need to draw. We need to figure out a
   // better way, since we will need both the clipped and unclipped versions.