Make chrome/browser/chromeos/accessibility compile on Athena with use_ash=0

ui/chromeos/accessibility_types.h

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Copyright 2014 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.
 
-#ifndef ASH_MAGNIFIER_MAGNIFIER_CONSTANTS_H_
-#define ASH_MAGNIFIER_MAGNIFIER_CONSTANTS_H_
+#ifndef UI_CHROMEOS_ACCESSIBILITY_TYPES_H_
+#define UI_CHROMEOS_ACCESSIBILITY_TYPES_H_
 
-namespace ash {
+namespace ui {
+
+enum AccessibilityNotificationVisibility {
+  A11Y_NOTIFICATION_NONE,
+  A11Y_NOTIFICATION_SHOW,
+};
+
+enum AccessibilityAlert {
+  A11Y_ALERT_NONE,
+  A11Y_ALERT_WINDOW_NEEDED,
+  A11Y_ALERT_WINDOW_OVERVIEW_MODE_ENTERED
+};
 
 // Note: Do not change these values; UMA and prefs depend on them.
 enum MagnifierType {
   MAGNIFIER_FULL    = 1,
   MAGNIFIER_PARTIAL = 2,
 };
 
 const int kMaxMagnifierType = 2;
 
 const MagnifierType kDefaultMagnifierType = MAGNIFIER_FULL;
 
 // Factor of magnification scale. For example, when this value is 1.189, scale
 // value will be changed x1.000, x1.189, x1.414, x1.681, x2.000, ...
 // Note: this value is 2.0 ^ (1 / 4).
 const float kMagnificationScaleFactor = 1.18920712f;
 
-}  // namespace ash
+}  // namespace ui
 
-#endif  // ASH_MAGNIFIER_MAGNIFIER_CONSTANTS_H_
+#endif  // UI_CHROMEOS_ACCESSIBILITY_TYPES_H_