cc : Don't draw animating layers which are transparent but raster them.

cc/trees/property_tree.cc

Index: cc/trees/property_tree.cc
diff --git a/cc/trees/property_tree.cc b/cc/trees/property_tree.cc
index 58555f3017b82eb528340bcacb9510666308cfaf..f2698cca67e67d12f94c1f30aab2b53356d724e4 100644
--- a/cc/trees/property_tree.cc
+++ b/cc/trees/property_tree.cc
@@ -802,8 +802,7 @@ void EffectTree::UpdateIsDrawn(EffectNode* node, EffectNode* parent_node) {
   if (node->has_copy_request)
     node->is_drawn = true;
   else if (EffectiveOpacity(node) == 0.f &&
-           (!node->has_potential_opacity_animation ||
-            property_trees()->is_active) &&
+           !node->has_potential_opacity_animation &&
            node->background_filters.IsEmpty())
     node->is_drawn = false;
   else if (parent_node)