[cros] check for updates in WebUI OOBE can be cancelled in dev builds.

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 56c85c52301c48da1082218a518e1f3b460c3027..ac15cb8cc738cf972d42aa895967deedc24435a9 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -10794,6 +10794,12 @@ Keep your key file in a safe place. You will need it to create new versions of y
       <message name="IDS_INSTALLING_UPDATE_DESC" desc="Additional info shown on the updates installation screen during OOBE">
         Your computer will restart when the update is complete.
       </message>
+      <message name="IDS_UPDATE_CANCEL" desc="Message telling to press Escape to cancel update on a non-official build">
+        Press ESCAPE to skip (Non-official builds only).
+      </message>
+      <message name="IDS_UPDATE_CANCELLED" desc="Message shown when the update has been cancelled by user">
+        Cancelling update...
+      </message>
       <message name="IDS_WELCOME_SCREEN_TITLE" desc="Title of the OOBE welcome screen">
         Connect
       </message>