cc : Add layer_list to LayerTreeImpl and build it for tests

cc/trees/occlusion_tracker_perftest.cc

Index: cc/trees/occlusion_tracker_perftest.cc
diff --git a/cc/trees/occlusion_tracker_perftest.cc b/cc/trees/occlusion_tracker_perftest.cc
index 35c30e15d7e16156efff83a804bf563757354b07..578730519f8c90e66650249ac494a4e94a6b8bad 100644
--- a/cc/trees/occlusion_tracker_perftest.cc
+++ b/cc/trees/occlusion_tracker_perftest.cc
@@ -93,7 +93,7 @@ TEST_F(OcclusionTrackerPerfTest, UnoccludedContentRect_FullyOccluded) {
   opaque_layer->SetDrawsContent(true);
   opaque_layer->SetBounds(viewport_rect.size());
   active_tree()->root_layer()->AddChild(std::move(opaque_layer));
-  active_tree()->BuildPropertyTreesForTesting();
+  active_tree()->BuildLayerListAndPropertyTreesForTesting();
 
   bool update_lcd_text = false;
   active_tree()->UpdateDrawProperties(update_lcd_text);
@@ -165,7 +165,7 @@ TEST_F(OcclusionTrackerPerfTest, UnoccludedContentRect_10OpaqueLayers) {
     active_tree()->root_layer()->AddChild(std::move(opaque_layer));
   }
 
-  active_tree()->BuildPropertyTreesForTesting();
+  active_tree()->BuildLayerListAndPropertyTreesForTesting();
   bool update_lcd_text = false;
   active_tree()->UpdateDrawProperties(update_lcd_text);
   const LayerImplList& rsll = active_tree()->RenderSurfaceLayerList();