Show special string in SignInPreference summary when signin is disabled

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 252 matching lines @@
         Sites
       </message>
 
       <!-- Sign-in preference -->
       <message name="IDS_SIGN_IN_TO_CHROME" desc="Title for the button to sign in to Chrome using one's Google account. [CHAR-LIMIT=27]">
         Sign in to Chrome
       </message>
       <message name="IDS_SIGN_IN_TO_CHROME_SUMMARY" desc="Summary for the button to sign in to Chrome, explaining benefits of signing in.">
         Sign in to get your bookmarks, history, passwords, and other settings on all your devices
       </message>
+      <message name="IDS_SIGN_IN_TO_CHROME_DISABLED_SUMMARY" desc="A descriptive line of text that appears under the 'Sign in to Chrome' option, in Chrome Settings on Android. The text explains why 'Sign in to Chrome' is disabled. 'Administrator' refers to the IT administrator of the company/organization that owns the user’s device.">
+          Disabled by the administrator of this device
+      </message>
       <message name="IDS_SIGN_IN_GOOGLE_ACTIVITY_CONTROLS" desc="Title of Google activity controls preference in signed in accounts settings screen">
         Google Activity Controls
       </message>
       <message name="IDS_SIGN_IN_GOOGLE_ACTIVITY_CONTROLS_MESSAGE" desc="Message of Google activity controls preference in signed in accounts settings screen">
         Control how Google uses your browsing history to personalize Search, ads, and other Google services.
       </message>
       <message name="IDS_SIGN_IN_GOOGLE_ACTIVITY_CONTROLS_MESSAGE_CHILD_ACCOUNT" desc="Message of Google activity controls preference in signed in accounts settings screen for child accounts">
         Control how Google uses your browsing history to personalize Search and other Google services.
       </message>
       <message name="IDS_SIGN_IN_SYNC_ERROR_WIDGET" desc="Accessibility description of the sync error widget in settings screen">
@@ skipping 2694 matching lines @@
         Remove and recreate this shortcut
       </message>
 
       <!-- Chrome Home -->
       <message name="IDS_BOTTOM_SHEET_HELP_BUBBLE_MESSAGE" desc="Text displayed in a help bubble above the bottom navigation sheet prompting users to pull the sheet up to see their bookmarks and other content.">
         Pull up to see bookmarks and more
       </message>
     </messages>
   </release>
 </grit>