Update Previews infbar accessibility string

chrome/android/java/strings/android_chrome_strings.grd

 <?xml version="1.0" encoding="UTF-8"?>
 
 <!-- android_chrome_strings.grd contains strings for Chrome for Android.
 
 FAQ:
   - How do I add, change, or remove a string?
       Just update this file.
   - Translations will happen automatically??
       Yes, indeed. Just add your string before the branch point and
       make the description good.
@@ skipping 1523 matching lines @@
         Loading…
       </message>
 
       <!-- InfoBar -->
       <message name="IDS_INFOBAR_CLOSE" desc="Accessibility label for the dismiss infobar Button">
         Close
       </message>
       <message name="IDS_BOTTOM_BAR_SCREEN_POSITION" desc="Accessibility label to inform users about the InfoBar location">
         Options available near bottom of the screen
       </message>
+      <message name="IDS_PREVIEWS_INFOBAR_ACCESSIBILITY_TITLE" desc="Accessibility label to inform users about the InfoBar notifying the user that mobile data usage was reduced and the page was shown faster by showing a preview version of the web page instead of the full page.">
+        Simplified page to save data and load faster.
+      </message>
 
       <!-- DuplicateDownloadInfoBar -->
       <message name="IDS_DUPLICATE_DOWNLOAD_INFOBAR_TEXT" desc="Prompt text for the confirmation dialog asking whether the user really wants to download a file when there already exists a file with the same name">
         Do you want to download <ph name="FILE_NAME">^1<ex>specialfile.pdf</ex></ph> again?
       </message>
       <message name="IDS_DUPLICATE_DOWNLOAD_REQUEST_INFOBAR_TEXT" desc="Prompt text for the confirmation dialog asking whether the user really wants to download a file when a file with the same name is still being downloaded">
         Do you want to start downloading <ph name="FILE_NAME">^1<ex>specialfile.pdf</ex></ph> again?
       </message>
       <message name="IDS_DUPLICATE_DOWNLOAD_INFOBAR_DOWNLOAD_BUTTON" desc="Label for the button that confirms that a user wants to download the file again. [CHAR-LIMIT=32]">
         Download
@@ skipping 1563 matching lines @@
       </message>
       <message name="IDS_BOTTOM_SHEET_HISTORY_TAB" desc="Accessibility string read when the history tab is selected.">
         History tab selected
       </message>
       <message name="IDS_BOTTOM_SHEET_HOME_TAB" desc="Accessibility string read when the home tab is selected.">
         Home tab selected
       </message>
     </messages>
   </release>
 </grit>