Return the shared context's handle when a virtualized context's

gpu/command_buffer/service/gl_context_virtual.cc

 // 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.
 
 #include "gpu/command_buffer/service/gl_context_virtual.h"
 
 #include "gpu/command_buffer/service/gl_state_restorer_impl.h"
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 #include "ui/gl/gl_surface.h"
 
@@ skipping 55 matching lines @@
     return true;
 
   gfx::GLSurface* current_surface = gfx::GLSurface::GetCurrent();
   return surface->GetBackingFrameBufferObject() ||
       surface->IsOffscreen() ||
       (current_surface &&
        current_surface->GetHandle() == surface->GetHandle());
 }
 
 void* GLContextVirtual::GetHandle() {
-  return NULL;
+  return shared_context_->GetHandle();
 }
 
 gfx::GLStateRestorer* GLContextVirtual::GetGLStateRestorer() {
   return state_restorer_.get();
 }
 
 void GLContextVirtual::SetSwapInterval(int interval) {
   shared_context_->SetSwapInterval(interval);
 }
 
@@ skipping 14 matching lines @@
 
 bool GLContextVirtual::WasAllocatedUsingRobustnessExtension() {
   return shared_context_->WasAllocatedUsingRobustnessExtension();
 }
 
 GLContextVirtual::~GLContextVirtual() {
   Destroy();
 }
 
 }  // namespace gpu