Different message for offline unlock, first time.

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index 5c9ca4d3abf8c5eb65004409b2c16cbe1b575cc0..0cb509a3ab9b1953bf4d33662ed213e73eea2f2f 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -13582,6 +13582,9 @@ After you create a new supervised user, you can manage their settings at any tim
       <message name="IDS_LOGIN_ERROR_AUTHENTICATING" desc="Couldn't sign in because password is invalid">
         Sorry, your password could not be verified. Please try again.
       </message>
+      <message name="IDS_LOGIN_ERROR_AUTHENTICATING_OFFLINE" desc="Couldn't unlock because the password can't be validated locally and the user is offline">
+        Sorry, your password could not be verified because you are offline.
+      </message>
       <message name="IDS_LOGIN_POD_EMPTY_PASSWORD_TEXT" desc="Text to display in the password field for user pod when no password has been entered.">
         Enter password
       </message>