Handling of different types of empty alt

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 545 matching lines @@
   NOTREACHED();
   return ui::AX_SORT_DIRECTION_NONE;
 }
 
 ui::AXNameFrom AXNameFromFromBlink(blink::WebAXNameFrom name_from) {
   switch (name_from) {
     case blink::kWebAXNameFromUninitialized:
       return ui::AX_NAME_FROM_UNINITIALIZED;
     case blink::kWebAXNameFromAttribute:
       return ui::AX_NAME_FROM_ATTRIBUTE;
+    case blink::kWebAXNameFromAttributeExplicitlyEmpty:
+      return ui::AX_NAME_FROM_ATTRIBUTE_EXPLICITLY_EMPTY;
     case blink::kWebAXNameFromCaption:
       return ui::AX_NAME_FROM_RELATED_ELEMENT;
     case blink::kWebAXNameFromContents:
       return ui::AX_NAME_FROM_CONTENTS;
     case blink::kWebAXNameFromPlaceholder:
       return ui::AX_NAME_FROM_PLACEHOLDER;
     case blink::kWebAXNameFromRelatedElement:
       return ui::AX_NAME_FROM_RELATED_ELEMENT;
     case blink::kWebAXNameFromValue:
       return ui::AX_NAME_FROM_VALUE;
@@ skipping 25 matching lines @@
     case blink::kWebAXTextAffinityUpstream:
       return ui::AX_TEXT_AFFINITY_UPSTREAM;
     case blink::kWebAXTextAffinityDownstream:
       return ui::AX_TEXT_AFFINITY_DOWNSTREAM;
   }
   NOTREACHED();
   return ui::AX_TEXT_AFFINITY_DOWNSTREAM;
 }
 
 }  // namespace content.