Refactor part of CompositorImpl::SetVisible() into its own method.

content/browser/renderer_host/compositor_impl_android.h

 // 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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_COMPOSITOR_IMPL_ANDROID_H_
 #define CONTENT_BROWSER_RENDERER_HOST_COMPOSITOR_IMPL_ANDROID_H_
 
 #include "base/basictypes.h"
 #include "base/cancelable_callback.h"
 #include "base/compiler_specific.h"
@@ skipping 114 matching lines @@
            defer_composite_for_gpu_channel_;
   }
   void CancelComposite() {
     DCHECK(WillComposite());
     if (WillCompositeThisFrame())
       current_composite_task_->Cancel();
     current_composite_task_.reset();
     composite_on_vsync_trigger_ = DO_NOT_COMPOSITE;
     will_composite_immediately_ = false;
   }
+  void CreateLayerTreeHost();
   void OnGpuChannelEstablished();
 
   // root_layer_ is the persistent internal root layer, while subroot_layer_
   // is the one attached by the compositor client.
   scoped_refptr<cc::Layer> root_layer_;
   scoped_refptr<cc::Layer> subroot_layer_;
 
   scoped_ptr<cc::LayerTreeHost> host_;
   content::UIResourceProviderImpl ui_resource_provider_;
   ui::ResourceManager resource_manager_;
@@ skipping 48 matching lines @@
   base::TimeTicks last_vsync_;
 
   base::WeakPtrFactory<CompositorImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(CompositorImpl);
 };
 
 } // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_COMPOSITOR_IMPL_ANDROID_H_