cc::Fix computation of surface backfacing-ness when using property trees

cc/trees/layer_tree_host_common_unittest.cc

 // Copyright 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/trees/layer_tree_host_common.h"
 
 #include <algorithm>
 #include <set>
 
 #include "cc/animation/keyframed_animation_curve.h"
@@ skipping 6038 matching lines @@
   EXPECT_EQ(1u, render_surface_layer_list_impl()
                     ->at(1)
                     ->render_surface()
                     ->layer_list()
                     .size());
 
   gfx::Transform rotation_transform = identity_transform;
   rotation_transform.RotateAboutXAxis(180.0);
 
   render_surface->SetTransform(rotation_transform);
+  root->layer_tree_impl()->property_trees()->needs_rebuild = true;
 
   ExecuteCalculateDrawProperties(root);
 
   EXPECT_EQ(1u, render_surface_layer_list_impl()->size());
   EXPECT_EQ(0u, render_surface_layer_list_impl()
                     ->at(0)
                     ->render_surface()
                     ->layer_list()
                     .size());
 }
@@ skipping 3056 matching lines @@
   bool root_in_rsll =
       std::find(rsll->begin(), rsll->end(), root) != rsll->end();
   EXPECT_TRUE(root_in_rsll);
   bool render_surface2_in_rsll =
       std::find(rsll->begin(), rsll->end(), render_surface2) != rsll->end();
   EXPECT_FALSE(render_surface2_in_rsll);
 }
 
 }  // namespace
 }  // namespace cc