Reuse property trees

cc/trees/layer_tree_host_common.cc

Index: cc/trees/layer_tree_host_common.cc
diff --git a/cc/trees/layer_tree_host_common.cc b/cc/trees/layer_tree_host_common.cc
index cdb67611826cc66e8cb3af2567c46f5a84729c48..6fb51d382d726bff69900e5a11699db54ad98d31 100644
--- a/cc/trees/layer_tree_host_common.cc
+++ b/cc/trees/layer_tree_host_common.cc
@@ -2556,7 +2556,10 @@ void LayerTreeHostCommon::CalculateDrawProperties(
           current_layer->draw_opacity() ==
           current_layer->DrawOpacityFromPropertyTrees(
               inputs->property_trees->opacity_tree);
-      CHECK(draw_opacities_match);
+      CHECK(draw_opacities_match)

[enne (OOO), 2015/04/17 20:04:21]

<_<

+          << "expected: " << current_layer->draw_opacity() << " actual: "
+          << current_layer->DrawOpacityFromPropertyTrees(
+                 inputs->property_trees->opacity_tree);
     }
   }
 
@@ -2593,4 +2596,14 @@ void LayerTreeHostCommon::CalculateDrawProperties(
   DCHECK(inputs->root_layer->render_surface());
 }
 
+PropertyTrees* GetPropertyTrees(Layer* layer,
+                                PropertyTrees* trees_from_inputs) {
+  return layer->layer_tree_host()->property_trees();
+}
+
+PropertyTrees* GetPropertyTrees(LayerImpl* layer,
+                                PropertyTrees* trees_from_inputs) {
+  return trees_from_inputs;
+}
+
 }  // namespace cc