Revert of Various changes required to support ChromeVox Next to read Views and Windows.

chrome/browser/chromeos/login/existing_user_controller.cc

Index: chrome/browser/chromeos/login/existing_user_controller.cc
diff --git a/chrome/browser/chromeos/login/existing_user_controller.cc b/chrome/browser/chromeos/login/existing_user_controller.cc
index e7c349a8218d0db480bcdd4e07251292612c443f..021a700dff306605deb9ab4e8bf4c01c27627d96 100644
--- a/chrome/browser/chromeos/login/existing_user_controller.cc
+++ b/chrome/browser/chromeos/login/existing_user_controller.cc
@@ -43,7 +43,6 @@
 #include "chrome/browser/chromeos/settings/cros_settings.h"
 #include "chrome/browser/chromeos/system/device_disabling_manager.h"
 #include "chrome/browser/signin/easy_unlock_service.h"
-#include "chrome/browser/ui/ash/accessibility/automation_manager_ash.h"
 #include "chrome/browser/ui/webui/chromeos/login/l10n_util.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/chrome_version_info.h"
@@ -1160,9 +1159,6 @@
   AccessibilityAlertInfo event(ProfileHelper::GetSigninProfile(), alert_text);
   SendControlAccessibilityNotification(
       ui::AX_EVENT_VALUE_CHANGED, &event);
-
-  AutomationManagerAsh::GetInstance()->HandleAlert(
-      ProfileHelper::GetSigninProfile(), alert_text);
 }
 
 void ExistingUserController::SetPublicSessionKeyboardLayoutAndLogin(