Move ExtensionSystem into extensions namespace

chrome/browser/chromeos/extensions/file_handler_util.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_handler_util.h"
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/i18n/case_conversion.h"
 #include "base/json/json_writer.h"
@@ skipping 753 matching lines @@
     ExecuteDoneOnUIThread(false);
     return;
   }
 
   if (handler_pid > 0) {
     SetupPermissionsAndDispatchEvent(file_system_name, file_system_root,
         file_list, handler_pid, NULL);
   } else {
     // We have to wake the handler background page before we proceed.
     extensions::LazyBackgroundTaskQueue* queue =
-        ExtensionSystem::Get(profile())->lazy_background_task_queue();
+        extensions::ExtensionSystem::Get(profile())->
+        lazy_background_task_queue();
     if (!queue->ShouldEnqueueTask(profile(), extension)) {
       ExecuteDoneOnUIThread(false);
       return;
     }
     queue->AddPendingTask(
         profile(), extension_id_,
         base::Bind(&ExtensionTaskExecutor::SetupPermissionsAndDispatchEvent,
                    this, file_system_name, file_system_root, file_list,
                    handler_pid));
   }
@@ skipping 100 matching lines @@
         handler_host_permissions_[i].first,
         handler_host_permissions_[i].second);
   }
 
   // We don't need this anymore.
   handler_host_permissions_.clear();
 }
 
 } // namespace file_handler_util