Remove offscreen compositor contexts.

mojo/examples/compositor_app/compositor_host.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_COMPOSITOR_APP_COMPOSITOR_HOST_H_
 #define MOJO_EXAMPLES_COMPOSITOR_APP_COMPOSITOR_HOST_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/threading/thread.h"
@@ skipping 24 matching lines @@
   virtual void Layout() OVERRIDE;
   virtual void ApplyScrollAndScale(const gfx::Vector2d& scroll_delta,
                                    float page_scale) OVERRIDE;
   virtual scoped_ptr<cc::OutputSurface> CreateOutputSurface(bool fallback)
       OVERRIDE;
   virtual void DidInitializeOutputSurface(bool success) OVERRIDE;
   virtual void WillCommit() OVERRIDE;
   virtual void DidCommit() OVERRIDE;
   virtual void DidCommitAndDrawFrame() OVERRIDE;
   virtual void DidCompleteSwapBuffers() OVERRIDE;
-  virtual scoped_refptr<cc::ContextProvider> OffscreenContextProvider()
-      OVERRIDE;
 
  private:
   void SetupScene();
 
   ScopedMessagePipeHandle gl_pipe_;
   scoped_ptr<cc::LayerTreeHost> tree_;
   scoped_refptr<cc::Layer> child_layer_;
   base::Thread compositor_thread_;
 };
 
 }  // namespace examples
 }  // namespace mojo
 
 #endif  // MOJO_EXAMPLES_COMPOSITOR_APP_COMPOSITOR_HOST_H_