Fix menu list and list box screen reader accessibility.

content/renderer/accessibility/blink_ax_enum_conversion.cc

 // Copyright (c) 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 "content/renderer/accessibility/blink_ax_enum_conversion.h"
 
 #include "base/logging.h"
 
 namespace content {
 
@@ skipping 341 matching lines @@
     case blink::WebAXEventLayoutComplete:
       return ui::AX_EVENT_LAYOUT_COMPLETE;
     case blink::WebAXEventLiveRegionChanged:
       return ui::AX_EVENT_LIVE_REGION_CHANGED;
     case blink::WebAXEventLoadComplete:
       return ui::AX_EVENT_LOAD_COMPLETE;
     case blink::WebAXEventLocationChanged:
       return ui::AX_EVENT_LOCATION_CHANGED;
     case blink::WebAXEventMenuListItemSelected:
       return ui::AX_EVENT_MENU_LIST_ITEM_SELECTED;
+    case blink::WebAXEventMenuListItemUnselected:
+      return ui::AX_EVENT_MENU_LIST_ITEM_SELECTED;
     case blink::WebAXEventMenuListValueChanged:
-        return ui::AX_EVENT_MENU_LIST_VALUE_CHANGED;
+      return ui::AX_EVENT_MENU_LIST_VALUE_CHANGED;
     case blink::WebAXEventRowCollapsed:
       return ui::AX_EVENT_ROW_COLLAPSED;
     case blink::WebAXEventRowCountChanged:
       return ui::AX_EVENT_ROW_COUNT_CHANGED;
     case blink::WebAXEventRowExpanded:
       return ui::AX_EVENT_ROW_EXPANDED;
     case blink::WebAXEventScrollPositionChanged:
       return ui::AX_EVENT_SCROLL_POSITION_CHANGED;
     case blink::WebAXEventScrolledToAnchor:
       return ui::AX_EVENT_SCROLLED_TO_ANCHOR;
@@ skipping 66 matching lines @@
     case blink::WebAXSortDirectionOther:
       return ui::AX_SORT_DIRECTION_OTHER;
     default:
       NOTREACHED();
   }
 
   return ui::AX_SORT_DIRECTION_NONE;
 }
 
 }  // Namespace content.