cc : Push layer lists instead of layer tree at commit and activation

cc/trees/damage_tracker_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/damage_tracker.h"
 
 #include <stddef.h>
 
 #include "cc/base/math_util.h"
 #include "cc/layers/layer_impl.h"
@@ skipping 861 matching lines @@
   LayerImpl* root = CreateAndSetUpTestTreeWithOneSurface();
 
   ClearDamageForAllSurfaces(root);
   {
     std::unique_ptr<LayerImpl> child2 =
         LayerImpl::Create(host_impl_.active_tree(), 3);
     child2->SetPosition(gfx::PointF(400.f, 380.f));
     child2->SetBounds(gfx::Size(6, 8));
     child2->SetDrawsContent(true);
     root->AddChild(std::move(child2));
+    root->layer_tree_impl()->BuildLayerListForTesting();
     host_impl_.active_tree()->ResetAllChangeTracking();
     LayerImpl* child2_ptr = host_impl_.active_tree()->LayerById(3);
     // Sanity check the initial conditions of the test, if these asserts
     // trigger, it means the test no longer actually covers the intended
     // scenario.
     ASSERT_FALSE(child2_ptr->LayerPropertyChanged());
     ASSERT_TRUE(child2_ptr->update_rect().IsEmpty());
   }
   root->layer_tree_impl()->property_trees()->needs_rebuild = true;
   EmulateDrawingOneFrame(root);
@@ skipping 733 matching lines @@
     gfx::Rect root_damage_rect =
         root->render_surface()->damage_tracker()->current_damage_rect();
     gfx::Rect damage_we_care_about = gfx::Rect(i, i);
     EXPECT_LE(damage_we_care_about.right(), root_damage_rect.right());
     EXPECT_LE(damage_we_care_about.bottom(), root_damage_rect.bottom());
   }
 }
 
 }  // namespace
 }  // namespace cc