If force-sign-in policy is enabled, popup warning dialog before window closing if auth token becom…

chrome/app/google_chrome_strings.grd

Index: chrome/app/google_chrome_strings.grd
diff --git a/chrome/app/google_chrome_strings.grd b/chrome/app/google_chrome_strings.grd
index 9f9bed9a02c03a306b228829526e322f119f4070..22d5cc520dcadbef5dae843ae162c5d966e3d88b 100644
--- a/chrome/app/google_chrome_strings.grd
+++ b/chrome/app/google_chrome_strings.grd
@@ -761,6 +761,18 @@ Signing in anyway will merge Chrome information like bookmarks, history, and oth
         </message>
       </if>
 
+      <if expr="toolkit_views">
+        <message name="IDS_ENTERPRISE_FORCE_SIGNOUT_CLOSE_CONFIRM" desc="Text of the button to confirm close all browser windows">
+          Close all Google Chrome windows and sign in now
+        </message>
+        <message name="IDS_ENTERPRISE_FORCE_SIGNOUT_EXPLANATION" desc="Text of the reason to sign out">
+          Authentication certificate failed. Please sign in to Google Chrome again as <ph name="USER_NAME">$2<ex>pat@example.com</ex></ph> or contact your administrator for more information. <ph name="ADDITIONAL_EXPLANATION">$3</ph>
+        </message>
+        <message name="IDS_ENTERPRISE_FORCE_SIGNOUT_EXPLANATION_WITHOUT_USER_NAME" desc="Text of the reason to sign out when there is no valid email address">
+          Authentication certificate failed. Please sign in to Google Chrome again or contact your administrator for more information. <ph name="ADDITIONAL_EXPLANATION">$2</ph>
+      </message>
+      </if>
+
       <!-- Signin Email Confirmation tab modal dialog -->
       <if expr="not chromeos">
         <message name="IDS_SIGNIN_EMAIL_CONFIRMATION_TITLE" desc="Title of the signin email confirmation tab modal dialog.">