[Extensions Views] Update the extension installed bubble's sync promo

chrome/app/chromium_strings.grd

Index: chrome/app/chromium_strings.grd
diff --git a/chrome/app/chromium_strings.grd b/chrome/app/chromium_strings.grd
index 1106f0567f3fb10df607174121576df5d4c2508a..53ee94a6705dbbd48acc17a07a5c95898013dcce 100644
--- a/chrome/app/chromium_strings.grd
+++ b/chrome/app/chromium_strings.grd
@@ -647,6 +647,9 @@ For Chromium, processes used to display diagnostics information (such as this "a
         <message name="IDS_EXTENSION_INSTALLED_HEADING" desc="First line in the content area of the extension installed bubble. Instructs that the extension was installed.">
           <ph name="EXTENSION_NAME">$1<ex>Gmail Checker</ex></ph> has been added to Chromium.
         </message>
+        <message name="IDS_EXTENSION_INSTALLED_SYNC_PROMO_LINK_NEW" desc="Text of the link to sign in to Chromium from the extension installed bubble. This will be converted to a link, with additional text around it.">
+          sign in to Chromium
+        </message>
         <message name="IDS_EXTENSION_INSTALLED_SIGNIN_PROMO_LINK" desc="The first part of the sign-in promo paragraph. This part will be converted to a link and will get more text appended to it (see IDS_EXTENSION_INSTALLED_SIGNIN_PROMO). Keep this text short.">
           Sign in to Chromium
         </message>