[NOT FOR REVIEW]

cc/trees/layer_tree_host_in_process.cc

Index: cc/trees/layer_tree_host_in_process.cc
diff --git a/cc/trees/layer_tree_host_in_process.cc b/cc/trees/layer_tree_host_in_process.cc
index 8a9d969f3a6e84dd2ccfa29311a4a836ea8cfa63..911316a6ac0ba06396a538ff3c76a37ae3cb3b42 100644
--- a/cc/trees/layer_tree_host_in_process.cc
+++ b/cc/trees/layer_tree_host_in_process.cc
@@ -655,6 +655,16 @@ bool LayerTreeHostInProcess::DoUpdateLayers(Layer* root_layer) {
     if (!settings_.use_layer_lists) {
       // If use_layer_lists is set, then the property trees should have been
       // built by the client already.
+      if (settings_.verify_clip_tree_calculations)
+        PropertyTreeBuilder::BuildPropertyTrees(
+            root_layer, page_scale_layer,
+            layer_tree_->inner_viewport_scroll_layer(),
+            layer_tree_->outer_viewport_scroll_layer(),
+            layer_tree_->overscroll_elasticity_layer(),
+            layer_tree_->elastic_overscroll(), layer_tree_->page_scale_factor(),
+            layer_tree_->device_scale_factor(),
+            gfx::Rect(layer_tree_->device_viewport_size()), identity_transform,
+            layer_tree_->test_property_trees_with_new_clip_tree(), true);
       PropertyTreeBuilder::BuildPropertyTrees(
           root_layer, page_scale_layer,
           layer_tree_->inner_viewport_scroll_layer(),