Move extension_test_message_listener to extensions.

apps/app_shim/app_shim_quit_interactive_uitest_mac.mm

 // 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.
 
 // Tests behavior when quitting apps with app shims.
 
 #import <Cocoa/Cocoa.h>
 #include <vector>
 
 #include "apps/app_shim/app_shim_host_manager_mac.h"
 #include "apps/app_shim/extension_app_shim_handler_mac.h"
 #include "apps/switches.h"
 #include "chrome/browser/apps/app_browsertest_util.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/browser_shutdown.h"
-#include "chrome/browser/extensions/extension_test_message_listener.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/test/base/interactive_test_utils.h"
 #include "content/public/test/test_utils.h"
 #include "extensions/browser/extension_registry.h"
+#include "extensions/test/extension_test_message_listener.h"
 #include "ui/events/test/cocoa_test_event_utils.h"
 
 using extensions::PlatformAppBrowserTest;
 
 namespace apps {
 
 namespace {
 
 class FakeHost : public apps::AppShimHandler::Host {
  public:
@@ skipping 91 matching lines @@
             atStart:NO];
 
   // This will time out if the event above does not terminate Chrome.
   content::RunMessageLoop();
 
   EXPECT_FALSE(handler_->FindHost(profile(), extension_id_));
   EXPECT_TRUE(browser_shutdown::IsTryingToQuit());
 }
 
 }  // namespace apps