Add skeleton UI for sync page.

chrome/app/chromium_strings.grd

 <?xml version="1.0" encoding="UTF-8"?>
 <!-- This file contains definitions of strings that are distribution specific.
 These strings will not be translated and only english versions will
 be available for now. -->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
       source_lang_id="en" enc_check="möl">
   <outputs>
     <output filename="grit/chromium_strings.h" type="rc_header">
       <emit emit_type='prepend'></emit>
@@ skipping 193 matching lines @@
       <file path="../../third_party/launchpad_translations/chromium_strings_sr.xtb" lang="sr" />
       <file path="../../third_party/launchpad_translations/chromium_strings_sv.xtb" lang="sv" />
       <file path="../../third_party/launchpad_translations/chromium_strings_ug.xtb" lang="ug" />
       <file path="../../third_party/launchpad_translations/chromium_strings_vi.xtb" lang="vi" />
       <file path="../../third_party/launchpad_translations/chromium_strings_zh-CN.xtb" lang="zh-CN" />
       <file path="../../third_party/launchpad_translations/chromium_strings_zh-TW.xtb" lang="zh-TW" />
     </if>
   </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>
       <message name="IDS_PRODUCT_NAME" desc="The Chrome application name">
         Chromium
       </message>
       <message name="IDS_SHORT_PRODUCT_NAME" desc="The Chrome application short name.">
         Chromium
       </message>
       <if expr="is_win">
@@ skipping 1175 matching lines @@
         </message>
         <message name="IDS_WIN_PROMPT_TO_CLOSE_APPS_FOR_DESKTOP"
                  desc="Modal message box prompt shown to the user after requesting to relaunch in Desktop mode while packaged apps are running, which will require all packaged apps to be closed and then restarted. Dialog is shown with choices: OK, Cancel.">
           Relaunching in Desktop mode will close and relaunch your Chromium apps.
         </message>
       </if>
 
     </messages>
   </release>
 </grit>