Adding a "Learn more" link to the Google DNS selection

chrome/app/chromeos_strings.grdp

 <?xml version="1.0" encoding="utf-8"?>
 <!-- ChromeOS-specific strings (included from generated_resources.grd).
      Everything in this file is wrapped in <if expr="pp_ifdef('chromeos')">. -->
 <grit-part>
   <!-- Idle Logout Dialog Strings -->
   <message name="IDS_IDLE_LOGOUT_TITLE" desc="Dialog title for the idle logout dialog">
     Are you still there?
   </message>
   <message name="IDS_IDLE_LOGOUT_WARNING_RESTART" desc="Restart label for the idle logout dialog">
     This computer will reset in <ph name="LOGOUT_TIME_LEFT">$1<ex>20</ex></ph> seconds.
@@ skipping 1190 matching lines @@
   <message name="IDS_OPTIONS_SETTINGS_INTERNET_CONNECTION_STATE" desc="In settings Internet options, the label for connection status.">
     Connection status:
   </message>
   <message name="IDS_OPTIONS_SETTINGS_INTERNET_IP_AUTOMATIC_CONFIGURATION" desc="In the IP address fields, labels automatic connection toggle">
     Configure automatically
   </message>
   <message name="IDS_OPTIONS_SETTINGS_INTERNET_AUTOMATIC_NAME_SERVERS" desc="In the name server type radio for static ip configuration, labels the automatic DNS selection.">
     Automatic name servers
   </message>
   <message name="IDS_OPTIONS_SETTINGS_INTERNET_GOOGLE_NAME_SERVERS" desc="In the name server type radio for static ip configuration, labels the Google DNS selection.">
-    Google name servers
+    Google name servers - <ph name="BEGIN_LINK">&lt;a href="https://developers.google.com/speed/public-dns" target="_blank"&gt;</ph>Learn more<ph name="END_LINK">&lt;/a&gt;</ph>
   </message>
   <message name="IDS_OPTIONS_SETTINGS_INTERNET_USER_NAME_SERVERS" desc="In the name server type radio for static ip configuration, labels the user DNS selection.">
     Custom name servers
   </message>
   <message name="IDS_OPTIONS_SETTINGS_INTERNET_USER_NAME_SERVER_1" desc="In the name server type radio for static ip configuration, is placeholder text for server 1">
     Server 1
   </message>
   <message name="IDS_OPTIONS_SETTINGS_INTERNET_USER_NAME_SERVER_2" desc="In the name server type radio for static ip configuration, is placeholder text for server 2">
     Server 2
   </message>
@@ skipping 2322 matching lines @@
   <message name="IDS_LOGIN_PUBLIC_ACCOUNT_SIGNOUT_REMINDER" desc="Text shown in the public account user pod, reminding the user to log out.">
     Your information will be removed when you sign out.
   </message>
   <message name="IDS_LOGIN_PUBLIC_ACCOUNT_ENTER" desc="Label text for the sign-in button in the public account user pod.">
     Enter
   </message>
   <message name="IDS_LOGIN_PUBLIC_ACCOUNT_ENTER_ACCESSIBLE_NAME" desc="Text to be spoken when focus is set to the sign-in button in the public account user pod.">
     Enter public session
   </message>
 </grit-part>