Move extension_test_message_listener to extensions.

chrome/browser/extensions/api/system_storage/system_storage_apitest.cc

 // Copyright 2013 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 <vector>
 
 #include "base/message_loop/message_loop.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/extensions/api/system_storage/storage_api_test_util.h"
 #include "chrome/browser/extensions/extension_apitest.h"
-#include "chrome/browser/extensions/extension_test_message_listener.h"
 #include "components/storage_monitor/storage_monitor.h"
 #include "components/storage_monitor/test_storage_monitor.h"
 #include "extensions/browser/api/system_storage/storage_info_provider.h"
+#include "extensions/test/extension_test_message_listener.h"
 #include "extensions/test/result_catcher.h"
 
 namespace {
 
 using extensions::StorageUnitInfoList;
 using extensions::test::TestStorageUnitInfo;
 using extensions::test::kRemovableStorageData;
 using storage_monitor::StorageMonitor;
 using storage_monitor::TestStorageMonitor;
 
@@ skipping 115 matching lines @@
       removable_storage_transient_id, false);
 
   // Simulate triggering onDetached event.
   ASSERT_TRUE(detach_listener.WaitUntilSatisfied());
   DetachRemovableStorage(kRemovableStorageData.device_id);
 
   ASSERT_TRUE(detach_device_id_listener.WaitUntilSatisfied());
 
   EXPECT_TRUE(catcher.GetNextResult()) << catcher.message();
 }