Hook up guest browser plugins to the accessibility tree.

ui/accessibility/ax_node_data.cc

 // Copyright 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 "ui/accessibility/ax_node_data.h"
 
 #include <set>
 
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
@@ skipping 325 matching lines @@
         break;
       case AX_ATTR_CAN_SET_VALUE:
         result += " can_set_value=" + value;
         break;
       case AX_ATTR_UPDATE_LOCATION_ONLY:
         result += " update_location_only=" + value;
         break;
       case AX_ATTR_CANVAS_HAS_FALLBACK:
         result += " has_fallback=" + value;
         break;
+      case AX_ATTR_IS_AX_TREE_HOST:
+        result += " is_ax_tree_host=" + value;
+        break;
       case AX_BOOL_ATTRIBUTE_NONE:
         break;
     }
   }
 
   for (size_t i = 0; i < intlist_attributes.size(); ++i) {
     const std::vector<int32>& values = intlist_attributes[i].second;
     switch (intlist_attributes[i].first) {
       case AX_ATTR_INDIRECT_CHILD_IDS:
         result += " indirect_child_ids=" + IntVectorToString(values);
@@ skipping 36 matching lines @@
     }
   }
 
   if (!child_ids.empty())
     result += " child_ids=" + IntVectorToString(child_ids);
 
   return result;
 }
 
 }  // namespace ui