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

chrome/browser/chromeos/extensions/file_manager/file_browser_private_api.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/extensions/file_manager/file_browser_private_api.h"
 
 #include <sys/stat.h>
 #include <sys/statvfs.h>
 #include <sys/types.h>
 #include <utime.h>
@@ skipping 797 matching lines @@
   std::set<std::string> default_tasks;
   for (PathAndMimeTypeSet::iterator it = files.begin(); it != files.end();
        ++it) {
     default_tasks.insert(file_handler_util::GetDefaultTaskIdFromPrefs(
         profile_, it->second, it->first.Extension()));
   }
 
   for (ExtensionSet::const_iterator iter = service->extensions()->begin();
        iter != service->extensions()->end();
        ++iter) {
-    const Extension* extension = *iter;
+    const Extension* extension = iter->get();
 
     // We don't support using hosted apps to open files.
     if (!extension->is_platform_app())
       continue;
 
     if (profile_->IsOffTheRecord() &&
         !service->IsIncognitoEnabled(extension->id()))
       continue;
 
     typedef std::vector<const extensions::FileHandlerInfo*> FileHandlerList;
@@ skipping 2265 matching lines @@
     zoom_type = content::PAGE_ZOOM_OUT;
   } else if (operation == "reset") {
     zoom_type = content::PAGE_ZOOM_RESET;
   } else {
     NOTREACHED();
     return false;
   }
   view_host->Zoom(zoom_type);
   return true;
 }