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

gpu/command_buffer/service/framebuffer_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/framebuffer_manager.h"
 #include "base/logging.h"
 #include "base/strings/stringprintf.h"
 #include "gpu/command_buffer/common/gles2_cmd_utils.h"
 #include "gpu/command_buffer/service/renderbuffer_manager.h"
 #include "gpu/command_buffer/service/texture_manager.h"
@@ skipping 497 matching lines @@
         done = false;
         break;
       }
     }
   } while (!done);
 }
 
 Framebuffer* FramebufferManager::GetFramebuffer(
     GLuint client_id) {
   FramebufferMap::iterator it = framebuffers_.find(client_id);
-  return it != framebuffers_.end() ? it->second : NULL;
+  return it != framebuffers_.end() ? it->second.get() : NULL;
 }
 
 void FramebufferManager::RemoveFramebuffer(GLuint client_id) {
   FramebufferMap::iterator it = framebuffers_.find(client_id);
   if (it != framebuffers_.end()) {
     it->second->MarkAsDeleted();
     framebuffers_.erase(it);
   }
 }
 
@@ skipping 71 matching lines @@
     Framebuffer* framebuffer) {
   DCHECK(framebuffer);
   return framebuffer->framebuffer_complete_state_count_id() ==
       framebuffer_state_change_count_;
 }
 
 }  // namespace gles2
 }  // namespace gpu