Added the aria-sort state to the accessibility tree.

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 404 matching lines @@
       return ui::AX_INVALID_STATE_GRAMMAR;
     case blink::WebAXInvalidStateOther:
       return ui::AX_INVALID_STATE_OTHER;
     default:
       NOTREACHED();
   }
 
   return ui::AX_INVALID_STATE_NONE;
 }
 
-}  // namespace content
+ui::AXSortDirection AXSortDirectionFromBlink(
+    blink::WebAXSortDirection sort_direction) {
+  switch (sort_direction) {
+    case blink::WebAXSortDirectionUndefined:
+      return ui::AX_SORT_DIRECTION_NONE;
+    case blink::WebAXSortDirectionNone:
+      return ui::AX_SORT_DIRECTION_UNSORTED;
+    case blink::WebAXSortDirectionAscending:
+      return ui::AX_SORT_DIRECTION_ASCENDING;
+    case blink::WebAXSortDirectionDescending:
+      return ui::AX_SORT_DIRECTION_DESCENDING;
+    case blink::WebAXSortDirectionOther:
+      return ui::AX_SORT_DIRECTION_OTHER;
+    default:
+      NOTREACHED();
+  }
+
+  return ui::AX_SORT_DIRECTION_NONE;
+}
+
+}  // Namespace content.