Add new permission string for extensions that override new tab pages.

chrome/app/generated_resources.grd

 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
 This file contains definitions of resources that will be translated for each
 locale.  The variables is_win, is_macosx, is_linux, and is_posix are available
 for making strings OS specific.  Other platform defines such as use_titlecase
 are declared in build/common.gypi.
 -->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
@@ skipping 3846 matching lines @@
         </message>
         <message name="IDS_EXTENSION_PROMPT_WARNING_PASSWORDS_PRIVATE" desc="Permission string for access to passwords settings.">
           Read and change saved password settings
         </message>
         <message name="IDS_EXTENSION_PROMPT_WARNING_USERS_PRIVATE" desc="Permission string for access to user accounts.">
           Read and change whitelisted users
         </message>
         <message name="IDS_EXTENSION_PROMPT_WARNING_DISPLAY_SOURCE" desc="Permission string for access to Display Source API.">
           Send audio and video to displays on the local network
         </message>
+        <message name="IDS_EXTENSION_PROMPT_WARNING_NEW_TAB_PAGE_OVERRIDE" desc="Permission string for extensions that override the new tab page.">
+          Replace the page you see when opening a new tab
+        </message>
       </if>
 
       <!-- Extension/App error messages -->
       <message name="IDS_EXTENSION_CANT_GET_ABSOLUTE_PATH" desc="Warning displayed in pack dialog when the absolute path to the extension directory can not be found.">
         Can't find the absolute path to the directory to pack.
       </message>
       <message name="IDS_EXTENSION_DIRECTORY_NO_EXISTS" desc="Warning displayed in pack dialog when the extension directory does not exist.">
         Input directory must exist.
       </message>
       <message name="IDS_EXTENSION_DISALLOW_NON_DOWNLOADED_GALLERY_INSTALLS" desc="Error displayed when an app or extension that has an update URL used by the gallery is installed when not directly downloaded from the gallery.">
@@ skipping 8489 matching lines @@
 
     <!-- VR specific strings -->
     <if expr="enable_vr">
       <message name="IDS_PRESS_APP_TO_EXIT" desc="Text displayed in a transient bubble to tell users how to return from cinema mode (where the page displayed in a cinema like environment) or presentation mode (where the WebVR page occupies the entire screen) to normal mode.">
         Press App button to exit
       </message>
     </if>
   </messages>
  </release>
 </grit>