command_buffer: Remove dead code for gl_begin_gl_end_on_fbo_change_to_backbuffer workaround

ui/gl/gl_surface.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 UI_GL_GL_SURFACE_H_
 #define UI_GL_GL_SURFACE_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 117 matching lines @@
   // the calling thread (i.e. same thread CommitOverlayPlanesAsync is called).
   virtual void CommitOverlayPlanesAsync(const SwapCompletionCallback& callback);
 
   // Initialize GL bindings.
   static bool InitializeOneOff();
 
   // Called after a context is made current with this surface. Returns false
   // on error.
   virtual bool OnMakeCurrent(GLContext* context);
 
-  // Called when the surface is bound as the current framebuffer for the
-  // current context.
-  virtual void NotifyWasBound();
-
   // Used for explicit buffer management.
   virtual bool SetBackbufferAllocation(bool allocated);
   virtual void SetFrontbufferAllocation(bool allocated);
 
   // Get a handle used to share the surface with another process. Returns null
   // if this is not possible.
   virtual void* GetShareHandle();
 
   // Get the platform specific display on which this surface resides, if
   // available.
@@ skipping 144 matching lines @@
 
  private:
   scoped_refptr<GLSurface> surface_;
 
   DISALLOW_COPY_AND_ASSIGN(GLSurfaceAdapter);
 };
 
 }  // namespace gfx
 
 #endif  // UI_GL_GL_SURFACE_H_