arc: Use v2/auth LSO page.

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="chromeos">. -->
 <grit-part>
   <message name="IDS_EMPTY_STRING" desc="Empty string, exist only to make code generic. No translation required.">
   </message>
   <!-- Idle logout dialog for retail mode -->
   <message name="IDS_IDLE_LOGOUT_TITLE" desc="Dialog title for the idle logout dialog. Used in retail mode only.">
     Are you still there?
   </message>
@@ skipping 6514 matching lines @@
   </message>
   <message name="IDS_ARC_OPT_IN_DIALOG_BUTTON_RETRY" desc="Retry button of the opt-in dialog for Android apps.">
     Retry
   </message>
   <message name="IDS_ARC_OPT_IN_DIALOG_PROGRESS_LSO" desc="Name of LSO loading progress of the opt-in dialog for Android apps.">
     Just a sec...
   </message>
   <message name="IDS_ARC_OPT_IN_DIALOG_PROGRESS_ANDROID" desc="Name of Android loading progress of the opt-in dialog for Android apps.">
     This may take up to a minute or so
   </message>
+  <message name="IDS_ARC_OPT_IN_DIALOG_AUTHORIZATION_FAILED" desc="Error message shown in case when auth code is not returned by server.">
+    Athorization failed
+  </message>
   <message name="IDS_ARC_SIGN_IN_NETWORK_ERROR" desc="Android sign-in error because of network error">
     Network error
   </message>
   <message name="IDS_ARC_SIGN_IN_SERVICE_UNAVAILABLE_ERROR" desc="Android sign-in error because of service is unavailable">
     Service unavailable
   </message>
   <message name="IDS_ARC_SIGN_IN_BAD_AUTHENTICATION_ERROR" desc="Android sign-in error because of bad authentification">
     Bad authentication
   </message>
   <message name="IDS_ARC_SIGN_IN_GMS_NOT_AVAILABLE_ERROR" desc="Android sign-in error because of GMS services are unavailable">
     GMS services are unavailable
   </message>
   <message name="IDS_ARC_SIGN_IN_CLOUD_PROVISION_FLOW_FAIL_ERROR" desc="Android sign-in error because of cloud provision flow failed">
     Cloud provision flow failed
   </message>
   <message name="IDS_ARC_SIGN_IN_UNKNOWN_ERROR" desc="Android sign-in error because of unknown error">
     Unknown error
   </message>
   <message name="IDS_ARC_SERVER_COMMUNICATION_ERROR" desc="Android sign-in error because of server communication error">
     Server communication error
   </message>
   <message name="IDS_FLAGS_ENABLE_IME_MENU_NAME" desc="Name of the about: flag for enabling opt-in IME menu.">
     Enable opt-in IME menu
     </message>
   <message name="IDS_FLAGS_ENABLE_IME_MENU_DESCRIPTION" desc="Description of the about: flag for enabling opt-in IME menu.">
     Enable access to the new IME menu in the Language Settings page.
   </message>
 </grit-part>