Implement aria-placeholder

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 528 matching lines @@
 
 ui::AXDescriptionFrom AXDescriptionFromFromBlink(
     blink::WebAXDescriptionFrom description_from) {
   switch (description_from) {
     case blink::WebAXDescriptionFromUninitialized:
       return ui::AX_DESCRIPTION_FROM_UNINITIALIZED;
     case blink::WebAXDescriptionFromAttribute:
       return ui::AX_DESCRIPTION_FROM_ATTRIBUTE;
     case blink::WebAXDescriptionFromContents:
       return ui::AX_DESCRIPTION_FROM_CONTENTS;
-    case blink::WebAXDescriptionFromPlaceholder:
-      return ui::AX_DESCRIPTION_FROM_PLACEHOLDER;
     case blink::WebAXDescriptionFromRelatedElement:
       return ui::AX_DESCRIPTION_FROM_RELATED_ELEMENT;
   }
   NOTREACHED();
   return ui::AX_DESCRIPTION_FROM_NONE;
 }
 
 ui::AXTextAffinity AXTextAffinityFromBlink(blink::WebAXTextAffinity affinity) {
   switch (affinity) {
     case blink::WebAXTextAffinityUpstream:
       return ui::AX_TEXT_AFFINITY_UPSTREAM;
     case blink::WebAXTextAffinityDownstream:
       return ui::AX_TEXT_AFFINITY_DOWNSTREAM;
   }
   NOTREACHED();
   return ui::AX_TEXT_AFFINITY_DOWNSTREAM;
 }
 
 }  // namespace content.