Removed "compositor" child window that was created by the GPU process.

ui/gfx/gl/gl_surface.h

 // Copyright (c) 2011 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 UI_GFX_GL_GL_SURFACE_H_
 #define UI_GFX_GL_GL_SURFACE_H_
 #pragma once
 
 #include "build/build_config.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/size.h"
 
 namespace gfx {
 
 // Encapsulates a surface that can be rendered to with GL, hiding platform
 // specific management.
 class GLSurface {
  public:
   GLSurface() {}
   virtual ~GLSurface() {}
 
+  // (Re)create the surface. TODO(apatrick): This is an ugly hack to allow the
+  // EGL surface associated to be recreated without destroying the associated
+  // context. The implementation of this function for other GLSurface derived
+  // classes is in a pending changelist.
+  virtual bool Initialize() { return true; }
+
   // Destroys the surface.
   virtual void Destroy() = 0;
 
   // Returns true if this surface is offscreen.
   virtual bool IsOffscreen() = 0;
 
   // Swaps front and back buffers. This has no effect for off-screen
   // contexts.
   virtual bool SwapBuffers() = 0;
 
   // Get the size of the surface.
   virtual gfx::Size GetSize() = 0;
 
   // Get the underlying platform specific surface "handle".
   virtual void* GetHandle() = 0;
 
   // Returns the internal frame buffer object name if the surface is backed by
   // FBO. Otherwise returns 0.
   virtual unsigned int GetBackingFrameBufferObject();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(GLSurface);
 };
 
 }  // namespace gfx
 
 #endif  // UI_GFX_GL_GL_SURFACE_H_