AXRoleDescription is not exposed correctly for aside, main, nav element

content/app/strings/content_strings.grd

 <?xml version="1.0" encoding="UTF-8"?>
 
 <!-- This file contains definitions of resources that will be translated for
 each locale. Specifically, these are UI strings that are used by content that
 need to be translated for each locale.-->
 
 <!-- Some of these strings and string descriptions were taken from
 WebKit/win/WebCoreLocalizedStrings.cpp so we include the original license
 below:
 
@@ skipping 323 matching lines @@
       <message name="IDS_AX_CALENDAR_WEEK_DESCRIPTION" desc="Accessible description of a button to select a specific week.">
         <ph name="WEEK">$1<ex>Week 38, 2014</ex></ph>, starting on <ph name="WEEK_START_DATE">$2<ex>September 15, 2014</ex></ph>
       </message>
 
       <message name="IDS_AX_ROLE_ARTICLE" desc="accessibility role description for article">
         article
       </message>
       <message name="IDS_AX_ROLE_BANNER" desc="accessibility role description for banner">
         banner
       </message>
+      <message name="IDS_AX_ROLE_COMPLEMENTARY" desc="accessibility role description for complementary">
+        complementary
+      </message>
       <message name="IDS_AX_ROLE_WEB_AREA" desc="accessibility role description for web area">
         HTML content
       </message>
       <message name="IDS_AX_ROLE_LINK" desc="accessibility role description for link">
         link
       </message>
       <message name="IDS_AX_ROLE_LIST_MARKER" desc="accessibility role description for list marker">
         list marker
       </message>
       <message name="IDS_AX_ROLE_IMAGE_MAP" desc="accessibility role description for image map">
@@ skipping 12 matching lines @@
         <message name="IDS_AX_ROLE_STEPPER" desc="accessibility role description for a stepper - a control where you can use up/down arrows to increment or decrement it. The name 'stepper' is how this user interface element is described by VoiceOver on Mac OS X; the translation should be consistent with VoiceOver.">
           stepper
         </message>
         <message name="IDS_AX_ROLE_TOGGLE_BUTTON" desc="accessibility role description for a toggle button">
           toggle button
         </message>
       </if>
       <message name="IDS_AX_ROLE_ADDRESS" desc="accessibility role description for an address (as in a person's contact information)">
         address
       </message>
+      <message name="IDS_AX_ROLE_MAIN_CONTENT" desc="accessibility role description for main content of the document.">
+        main
+      </message>
+      <message name="IDS_AX_ROLE_NAVIGATIONAL_LINK" desc="accessibility role description for group of navigational links.">
+        navigation
+      </message>
 
       <message name="IDS_AX_BUTTON_ACTION_VERB" desc="Verb stating the action that will occur when a button is pressed, as used by accessibility.">
         press
       </message>
       <message name="IDS_AX_RADIO_BUTTON_ACTION_VERB" desc="Verb stating the action that will occur when a radio button is clicked, as used by accessibility.">
         select
       </message>
       <message name="IDS_AX_TEXT_FIELD_ACTION_VERB" desc="Verb stating the action that will occur when a text field is selected, as used by accessibility.">
         activate
       </message>
@@ skipping 323 matching lines @@
         Please lengthen this text to <ph name="MIN_CHARACTERS">$2<ex>101</ex></ph> characters or more (you are currently using <ph name="CURRENT_LENGTH">$1<ex>100</ex></ph> characters).
       </message>
 
       <message name="IDS_PLUGIN_INITIALIZATION_ERROR" desc="A message displayed when a plug-in failed to load">
         Couldn't load plug-in.
       </message>
 
     </messages>
   </release>
 </grit>