Rename RootWindowHost to WindowTreeHost

mojo/examples/aura_demo/demo_context_factory.h

 // Copyright 2013 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 MOJO_EXAMPLES_AURA_DEMO_DEMO_CONTEXT_FACTORY_H_
 #define MOJO_EXAMPLES_AURA_DEMO_DEMO_CONTEXT_FACTORY_H_
 
 #include "ui/compositor/compositor.h"
 
 namespace webkit {
 namespace gpu {
 class ContextProviderInProcess;
 }
 }
 
 namespace mojo {
 namespace examples {
 
-class RootWindowHostMojo;
+class WindowTreeHostMojo;
 
 // The default factory that creates in-process contexts.
 class DemoContextFactory : public ui::ContextFactory {
  public:
-  explicit DemoContextFactory(RootWindowHostMojo* rwhm);
+  explicit DemoContextFactory(WindowTreeHostMojo* rwhm);
   virtual ~DemoContextFactory();
 
   // ContextFactory implementation
   virtual scoped_ptr<cc::OutputSurface> CreateOutputSurface(
       ui::Compositor* compositor, bool software_fallback) OVERRIDE;
 
   virtual scoped_refptr<ui::Reflector> CreateReflector(
       ui::Compositor* compositor,
       ui::Layer* layer) OVERRIDE;
   virtual void RemoveReflector(scoped_refptr<ui::Reflector> reflector) OVERRIDE;
 
   virtual scoped_refptr<cc::ContextProvider>
       OffscreenCompositorContextProvider() OVERRIDE;
   virtual scoped_refptr<cc::ContextProvider>
       SharedMainThreadContextProvider() OVERRIDE;
   virtual void RemoveCompositor(ui::Compositor* compositor) OVERRIDE;
   virtual bool DoesCreateTestContexts() OVERRIDE;
 
   bool Initialize();
 
  private:
   scoped_refptr<webkit::gpu::ContextProviderInProcess>
       offscreen_compositor_contexts_;
   scoped_refptr<webkit::gpu::ContextProviderInProcess>
       shared_main_thread_contexts_;
 
-  RootWindowHostMojo* rwhm_;
+  WindowTreeHostMojo* rwhm_;
 
   DISALLOW_COPY_AND_ASSIGN(DemoContextFactory);
 };
 
 }  // namespace examples
 }  // namespace mojo
 
 #endif  // MOJO_EXAMPLES_AURA_DEMO_DEMO_CONTEXT_FACTORY_H_