Update CompositorCC WebLayerTreeView usage for WebKit API change

ui/gfx/compositor/compositor.cc

Index: ui/gfx/compositor/compositor.cc
diff --git a/ui/gfx/compositor/compositor.cc b/ui/gfx/compositor/compositor.cc
index 7d8abdfef62fca23266d5c9eda7f047fab6a202e..506b0ca8f18950219a53ac50cedd2311ce1548f2 100644
--- a/ui/gfx/compositor/compositor.cc
+++ b/ui/gfx/compositor/compositor.cc
@@ -128,7 +128,11 @@ Compositor::Compositor(CompositorDelegate* delegate,
     command_line->HasSwitch(switches::kUIEnablePerTilePainting);
 #endif
 
+#if defined(WEBLAYERTREEVIEW_HAS_INITIALIZE)
+  host_.initialize(this, root_web_layer_, settings);
+#else
   host_ = WebKit::WebLayerTreeView::create(this, root_web_layer_, settings);
+#endif
   root_web_layer_.setAnchorPoint(WebKit::WebFloatPoint(0.f, 0.f));
   WidgetSizeChanged(size_);
 }
@@ -278,11 +282,14 @@ WebKit::WebGraphicsContext3D* Compositor::createContext3D() {
   }
 }
 
-void Compositor::didCompleteSwapBuffers() {
-  NotifyEnd();
+void Compositor::didRebindGraphicsContext(bool success) {
 }
 
-void Compositor::didRebindGraphicsContext(bool success) {
+void Compositor::didCommitAndDrawFrame() {
+}
+
+void Compositor::didCompleteSwapBuffers() {
+  NotifyEnd();
 }
 
 void Compositor::scheduleComposite() {