cc: Merge LayerTree into the LayerTreeHost.

cc/trees/layer_tree_host_unittest_video.cc

Index: cc/trees/layer_tree_host_unittest_video.cc
diff --git a/cc/trees/layer_tree_host_unittest_video.cc b/cc/trees/layer_tree_host_unittest_video.cc
index dcfbe9ad876392cb875bb8c1807e842268d0ecf4..51e90ce3ee25d80560d3c33c105a4f22c7a4d611 100644
--- a/cc/trees/layer_tree_host_unittest_video.cc
+++ b/cc/trees/layer_tree_host_unittest_video.cc
@@ -34,8 +34,8 @@ class LayerTreeHostVideoTestSetNeedsDisplay
     root->AddChild(video);
     video_layer_id_ = video->id();
 
-    layer_tree()->SetRootLayer(root);
-    layer_tree()->SetDeviceScaleFactor(2.f);
+    layer_tree_host()->SetRootLayer(root);
+    layer_tree_host()->SetDeviceScaleFactor(2.f);
     LayerTreeHostVideoTest::SetupTree();
   }