Send size to NativeViewportClient::OnCreated instead of GLES2Client::DidCreateContext

mojo/examples/aura_demo/root_window_host_mojo.h

Index: mojo/examples/aura_demo/root_window_host_mojo.h
diff --git a/mojo/examples/aura_demo/root_window_host_mojo.h b/mojo/examples/aura_demo/root_window_host_mojo.h
index 8227754214c1a3fe420391f80e2bc206e4ecc1e0..415618156d322d4f15d3db47ce1b0e79eefc04e1 100644
--- a/mojo/examples/aura_demo/root_window_host_mojo.h
+++ b/mojo/examples/aura_demo/root_window_host_mojo.h
@@ -28,6 +28,7 @@ class WindowTreeHostMojo : public aura::WindowTreeHost,
                      const base::Callback<void()>& compositor_created_callback);
   virtual ~WindowTreeHostMojo();
 
+  gfx::Rect bounds() const { return bounds_; }
   GLES2ClientImpl* gles2_client() { return gles2_client_.get(); }
 
  private:
@@ -55,16 +56,18 @@ class WindowTreeHostMojo : public aura::WindowTreeHost,
   virtual void PrepareForShutdown() OVERRIDE;
 
   // Overridden from NativeViewportClient:
-  virtual void OnCreated() OVERRIDE;
+  virtual void OnCreated() MOJO_OVERRIDE;
   virtual void OnDestroyed() OVERRIDE;
   virtual void OnBoundsChanged(const Rect& bounds) OVERRIDE;
   virtual void OnEvent(const Event& event) OVERRIDE;
 
-  void DidCreateContext(gfx::Size size);
+  void DidCreateContext();
+  void CreateCompositorIfNeeded();
 
   static ui::ContextFactory* context_factory_;
 
   scoped_ptr<GLES2ClientImpl> gles2_client_;
+  bool context_created_;
   RemotePtr<NativeViewport> native_viewport_;
   base::Callback<void()> compositor_created_callback_;