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

chrome/browser/chromeos/system_logs/chrome_internal_log_source.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 "chrome/browser/chromeos/system_logs/chrome_internal_log_source.h"
 
 #include "base/json/json_string_value_serializer.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chromeos/settings/cros_settings.h"
 #include "chrome/browser/chromeos/system_logs/system_logs_fetcher.h"
@@ skipping 76 matching lines @@
   ExtensionService* service =
       extensions::ExtensionSystem::Get(default_profile)->extension_service();
   if (!service)
     return;
 
   std::string extensions_list;
   const ExtensionSet* extensions = service->extensions();
   for (ExtensionSet::const_iterator it = extensions->begin();
        it != extensions->end();
        ++it) {
-    const extensions::Extension* extension = *it;
+    const extensions::Extension* extension = it->get();
     if (extensions_list.empty()) {
       extensions_list = extension->name();
     } else {
       extensions_list += ", " + extension->name();
     }
   }
 
   if (!extensions_list.empty())
     (*response)[kExtensionsListKey] = extensions_list;
 }
 
 }  // namespace chromeos