Add skeleton UI for sync page.

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 4ecc419f04217de7b2d8dc766ffb32720cd02aea..68553fb43b97dbf6587b4aa4d8b4687bae87a507 100644
--- a/chrome/app/chromium_strings.grd
+++ b/chrome/app/chromium_strings.grd
@@ -211,6 +211,9 @@ be available for now. -->
   </translations>
   <release seq="1" allow_pseudo="false">
     <messages fallback_to_english="true">
+      <!-- Settings specific strings -->
+      <part file="settings_chromium_strings.grdp" />
+
       <message name="IDS_PROFILES_DISCONNECT_MANAGED_PROFILE_TEXT" desc="Message explaining to the user what will happen if they disconnect the managed profile.">
         Disconnecting <ph name="USERNAME">$1<ex>someone@example.com</ex></ph> will clear your history, bookmarks, settings, and other Chromium data stored on this device. Data stored in your Google Account will not be cleared and can be managed on <ph name="GOOGLE_DASHBOARD_LINK">&lt;a target="_blank" href="$2"&gt;</ph>Google Dashboard<ph name="END_GOOGLE_DASHBOARD_LINK">&lt;/a&gt;</ph>.
       </message>