Remove DOMAutomationController::automation_id_

chrome/browser/chromeos/login/proxy_auth_dialog_browsertest.cc

 // Copyright 2015 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 "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "base/run_loop.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/chromeos/login/login_manager_test.h"
@@ skipping 101 matching lines @@
     auth_dialog_waiter.Wait();
 
     ASSERT_TRUE(auth_dialog_waiter.login_handler());
     auth_dialog_waiter.login_handler()->CancelAuth();
   }
 
   {
     OobeScreenWaiter screen_waiter(OobeScreen::SCREEN_GAIA_SIGNIN);
     ProxyAuthDialogWaiter auth_dialog_waiter;
     ASSERT_TRUE(content::ExecuteScript(oobe_ui->web_ui()->GetWebContents(),
-                                       "window.domAutomationController.send(!!("
-                                       "$('add-user-button').click()"
-                                       "));"));
+                                       "$('add-user-button').click()"));
     screen_waiter.Wait();
     auth_dialog_waiter.Wait();
     ASSERT_TRUE(auth_dialog_waiter.login_handler());
   }
 }
 
 }  // namespace chromeos