Sync Promo: Add a way to collapse the sync promo

chrome/app/generated_resources.grd

 <?xml version="1.0" encoding="UTF-8"?>
 
 <!--
 This file contains definitions of resources that will be translated for each
 locale.  The variables is_win, is_macosx, is_linux, and is_posix are available
 for making strings OS specific.  Other platform defines such as use_titlecase
 are declared in build/common.gypi.
 -->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
@@ skipping 9309 matching lines @@
       </message>
       <message name="IDS_SYNC_ENCRYPT_ALL_LABEL" desc="Label for the checkbox that enables encryption of everything.">
         Encrypt all my data
       </message>
       <message name="IDS_SYNC_PASSPHRASE_CHECKBOX_LABEL" desc="Label for the checkbox that enables a passphrase for sync.">
         Use a sync passphrase to encrypt my data
       </message>
       <message name="IDS_SYNC_PASSPHRASE_WARNING" desc="Warning message about using a passphrase for sync.">
         You are currently using a passphrase.  If you have forgotten your passphrase, you can reset sync to clear your data from Google's servers using the Google Dashboard.
       </message>
+      <message name="IDS_SYNC_STATUS_NOT_CONNECTED" desc="Status shown in the new tab page when the user is not signed into sync">
+        not connected
+      </message>
 
       <!-- Passphrase dialog strings -->
       <if expr="not pp_ifdef('use_titlecase')">
         <message name="IDS_SYNC_ENTER_PASSPHRASE_TITLE" desc="Title for the dialog where the user enters the passphrase.">
           Enter your sync passphrase
         </message>
       </if>
       <if expr="pp_ifdef('use_titlecase')">
         <message name="IDS_SYNC_ENTER_PASSPHRASE_TITLE" desc="In title case: title for the dialog where the user enters the passphrase.">
           Enter Your Sync Passphrase
@@ skipping 3606 matching lines @@
     </includes>
     <structures fallback_to_english="true">
       <structure name="IDD_CHROME_FRAME_FIND_DIALOG" file="cf_resources.rc" type="dialog" >
       </structure>
       <structure name="IDD_CHROME_FRAME_READY_PROMPT" file="cf_resources.rc" type="dialog" >
       </structure>
     </structures>
 
   </release>
 </grit>