Adds AX role for abbr tag.

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 74 matching lines @@
     state |= (1 << ui::AX_STATE_HORIZONTAL);
 
   if (o.isVisited())
     state |= (1 << ui::AX_STATE_VISITED);
 
   return state;
 }
 
 ui::AXRole AXRoleFromBlink(blink::WebAXRole role) {
   switch (role) {
+    case blink::WebAXRoleAbbr:
+      return ui::AX_ROLE_ABBR;
     case blink::WebAXRoleAlert:
       return ui::AX_ROLE_ALERT;
     case blink::WebAXRoleAlertDialog:
       return ui::AX_ROLE_ALERT_DIALOG;
     case blink::WebAXRoleAnnotation:
       return ui::AX_ROLE_ANNOTATION;
     case blink::WebAXRoleApplication:
       return ui::AX_ROLE_APPLICATION;
     case blink::WebAXRoleArticle:
       return ui::AX_ROLE_ARTICLE;
@@ skipping 409 matching lines @@
     case blink::WebAXDescriptionFromRelatedElement:
       return ui::AX_DESCRIPTION_FROM_RELATED_ELEMENT;
     default:
       NOTREACHED();
   }
 
   return ui::AX_DESCRIPTION_FROM_UNINITIALIZED;
 }
 
 }  // namespace content.