Move extension_test_message_listener to extensions.

chrome/browser/apps/event_page_browsertest.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 "chrome/browser/apps/app_browsertest_util.h"
-#include "chrome/browser/extensions/extension_test_message_listener.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/test/browser_test.h"
 #include "content/public/test/test_utils.h"
 #include "extensions/browser/notification_types.h"
+#include "extensions/test/extension_test_message_listener.h"
 
 using extensions::Extension;
 using extensions::PlatformAppBrowserTest;
 
 namespace {
 
 class AppEventPageTest : public PlatformAppBrowserTest {
  protected:
   void TestUnloadEventPage(const char* app_path) {
     // Load and launch the app.
@@ skipping 22 matching lines @@
 IN_PROC_BROWSER_TEST_F(AppEventPageTest, OnSuspendNoApiUse) {
   TestUnloadEventPage("event_page/suspend_simple");
 }
 
 // Tests that an app's event page will eventually be unloaded. The onSuspend
 // event handler of this app calls a chrome.storage API function.
 // See: http://crbug.com/296834
 IN_PROC_BROWSER_TEST_F(AppEventPageTest, OnSuspendUseStorageApi) {
   TestUnloadEventPage("event_page/suspend_storage_api");
 }