Update gpu/ to use scoped_refptr<T>::get() rather than implicit "operator T*"

gpu/command_buffer/service/image_manager.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/image_manager.h"
 
 #include "ui/gl/gl_image.h"
 
 namespace gpu {
 namespace gles2 {
 
 ImageManager::ImageManager() {
 }
 
 ImageManager::~ImageManager() {
 }
 
 void ImageManager::AddImage(gfx::GLImage* image, int32 service_id) {
   gl_images_[service_id] = image;
 }
 
 void ImageManager::RemoveImage(int32 service_id) {
   gl_images_.erase(service_id);
 }
 
 gfx::GLImage* ImageManager::LookupImage(int32 service_id) {
   GLImageMap::const_iterator iter = gl_images_.find(service_id);
   if (iter != gl_images_.end())
-    return iter->second;
+    return iter->second.get();
 
   return NULL;
 }
 
 }  // namespace gles2
 }  // namespace gpu