Added DataTypeController integration and UI surfacing for syncing Search Engines.

chrome/test/live_sync/live_sync_test.cc

Index: chrome/test/live_sync/live_sync_test.cc
===================================================================
--- chrome/test/live_sync/live_sync_test.cc	(revision 97454)
+++ chrome/test/live_sync/live_sync_test.cc	(working copy)
@@ -215,6 +215,10 @@
   // Disable non-essential access of external network resources.
   if (!cl->HasSwitch(switches::kDisableBackgroundNetworking))
     cl->AppendSwitch(switches::kDisableBackgroundNetworking);
+
+  // TODO(stevet): Remove this once search engines sync is enabled by default.
+  if (!cl->HasSwitch(switches::kEnableSyncSearchEngines))
+    cl->AppendSwitch(switches::kEnableSyncSearchEngines);
 }
 
 // static