Add a glBegin/End pair to make glBindFramebuffer work

content/common/gpu/image_transport_surface_fbo_mac.h

 // Copyright 2014 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 CONTENT_COMMON_GPU_IMAGE_TRANSPORT_SURFACE_FBO_MAC_H_
 #define CONTENT_COMMON_GPU_IMAGE_TRANSPORT_SURFACE_FBO_MAC_H_
 
 #include "base/mac/scoped_cftyperef.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/common/gpu/gpu_command_buffer_stub.h"
@@ skipping 56 matching lines @@
   void Destroy() override;
   bool DeferDraws() override;
   bool IsOffscreen() override;
   bool SwapBuffers() override;
   bool PostSubBuffer(int x, int y, int width, int height) override;
   bool SupportsPostSubBuffer() override;
   gfx::Size GetSize() override;
   void* GetHandle() override;
   void* GetDisplay() override;
   bool OnMakeCurrent(gfx::GLContext* context) override;
+  void NotifyWasBound() override;
   unsigned int GetBackingFrameBufferObject() override;
   bool SetBackbufferAllocation(bool allocated) override;
   void SetFrontbufferAllocation(bool allocated) override;
 
   // Called when the context may continue to make forward progress after a swap.
   void SendSwapBuffers(uint64 surface_handle,
                        const gfx::Size pixel_size,
                        float scale_factor);
   void SetRendererID(int renderer_id);
 
@@ skipping 42 matching lines @@
   std::vector<ui::LatencyInfo> latency_info_;
 
   scoped_ptr<ImageTransportHelper> helper_;
 
   DISALLOW_COPY_AND_ASSIGN(ImageTransportSurfaceFBO);
 };
 
 }  // namespace content
 
 #endif  //  CONTENT_COMMON_GPU_IMAGE_TRANSPORT_SURFACE_MAC_H_