Move extension_test_message_listener to extensions.

chrome/browser/apps/app_browsertest_util.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 "base/command_line.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/extensions/api/tabs/tabs_api.h"
 #include "chrome/browser/extensions/extension_function_test_utils.h"
-#include "chrome/browser/extensions/extension_test_message_listener.h"
 #include "chrome/browser/ui/apps/chrome_app_delegate.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/extensions/application_launch.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/test/browser_test_utils.h"
 #include "content/public/test/test_utils.h"
 #include "extensions/browser/app_window/app_window_contents.h"
 #include "extensions/browser/app_window/app_window_registry.h"
 #include "extensions/browser/app_window/native_app_window.h"
 #include "extensions/browser/process_manager.h"
 #include "extensions/common/switches.h"
+#include "extensions/test/extension_test_message_listener.h"
 
 using content::WebContents;
 
 namespace {
 
 const char kAppWindowTestApp[] = "app_window/generic";
 
 }  // namespace
 
 namespace utils = extension_function_test_utils;
@@ skipping 216 matching lines @@
   return app_window;
 }
 
 void ExperimentalPlatformAppBrowserTest::SetUpCommandLine(
     CommandLine* command_line) {
   PlatformAppBrowserTest::SetUpCommandLine(command_line);
   command_line->AppendSwitch(switches::kEnableExperimentalExtensionApis);
 }
 
 }  // namespace extensions