Clean up RenderWidget/RenderWidgetCompositor/WebKit interactions

content/renderer/render_view_impl_android.cc

 // Copyright (c) 2012 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 "content/renderer/render_view_impl.h"
 
 #include "base/command_line.h"
 #include "base/message_loop.h"
 #include "cc/layer_tree_host.h"
 #include "content/renderer/gpu/render_widget_compositor.h"
 
 namespace content {
 
 void RenderViewImpl::OnEnableHidingTopControls(bool enable) {
-  DCHECK(compositor_ && compositor_->layer_tree_host());
-  if (compositor_ && compositor_->layer_tree_host()) {
-    compositor_->layer_tree_host()->enableHidingTopControls(enable);
+  DCHECK(compositor_);
+  if (compositor_) {
+    compositor_->EnableHidingTopControls(enable);
   }
 }
 
 }  // namespace content