Fix accessibility problem for ExpandablePreferenceGroup.

chrome/android/java/strings/android_chrome_strings.grd

 <?xml version="1.0" encoding="UTF-8"?>
 <grit current_release="1" latest_public_release="0">
   <outputs>
     <output filename="values-am/android_chrome_strings.xml" lang="am" type="android" />
     <output filename="values-ar/android_chrome_strings.xml" lang="ar" type="android" />
     <output filename="values-bg/android_chrome_strings.xml" lang="bg" type="android" />
     <output filename="values-ca/android_chrome_strings.xml" lang="ca" type="android" />
     <output filename="values-cs/android_chrome_strings.xml" lang="cs" type="android" />
     <output filename="values-da/android_chrome_strings.xml" lang="da" type="android" />
     <output filename="values-de/android_chrome_strings.xml" lang="de" type="android" />
@@ skipping 456 matching lines @@
       </message>
       <message name="IDS_WEBSITE_SETTINGS_BLOCKED_GROUP_HEADING" desc="The heading for a list of websites that have been blocked from using a particular permission, e.g. blocked from accessing the user's location.">
         Blocked
       </message>
       <message name="IDS_WEBSITE_SETTINGS_ALLOWED_GROUP_HEADING" desc="The heading for a list of websites that have been allowed to use a particular permission, e.g. allowed to access a user's location.">
         Allowed
       </message>
       <message name="IDS_WEBSITE_SETTINGS_EXCEPTIONS_GROUP_HEADING" desc="The heading for a list of websites that have been granted an exception to access a particular permission, e.g. to access the user's location.">
         Exceptions
       </message>
+      <message name="IDS_ACCESSIBILITY_EXPANDED_GROUP" desc="The accessibility text to read when the selected widget is expanded.">
+        Expanded - click to collapse.
+      </message>
+      <message name="IDS_ACCESSIBILITY_COLLAPSED_GROUP" desc="The accessibility text to read when the selected widget is collapsed.">
+        Collapsed - click to expand.
+      </message>
       <message name="IDS_WEBSITE_SETTINGS_CATEGORY_BLOCK_ALL" desc="Summary text explaining that a permission is blocked for all sites.">
         Block all sites
       </message>
       <message name="IDS_WEBSITE_SETTINGS_CATEGORY_BLOCK_RECOMMENDED" desc="Summary text explaining that a permission is blocked, which is the recommended setting.">
         Block (recommended)
       </message>
       <message name="IDS_WEBSITE_SETTINGS_CATEGORY_ASK_BEFORE_SENDING" desc="Summary text explaining that permission will be requested before sending things, e.g. notifications.">
         Ask before sending (recommended)
       </message>
       <message name="IDS_WEBSITE_SETTINGS_CATEGORY_ASK_BEFORE_ACCESSING" desc="Summary text explaining that permission will be requested before accessing something, like location.">
@@ skipping 979 matching lines @@
       <message name="IDS_FRE_NEW_RECENTS_MENU_TITLE" desc="Title for the Recents Menu what's-new-screen">
         Find your tabs here
       </message>
       <message name="IDS_FRE_NEW_RECENTS_MENU_TEXT" desc="Text for the Recents Menu what's-new-screen">
         Your tabs and apps are now in the same place for easier access.  You can turn this feature off in <ph name="BEGIN_LINK">&lt;link&gt;</ph>Settings<ph name="END_LINK">&lt;/link&gt;</ph>.
       </message>
 
     </messages>
   </release>
 </grit>