[Sync] Cleanup all tab sync enabling logic now that its on by default.

BUG=none
TEST=


Review URL: https://chromiumcodereview.appspot.com/10443046

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@139462 0039d316-1c4b-4281-b951-d872f2087c98
DictionaryValue* GetUpdatesCallerInfoToValue(
    const sync_pb::GetUpdatesCallerInfo& proto) {
  DictionaryValue* value = new DictionaryValue();
  SET_ENUM(source, GetUpdatesSourceString);
  SET_BOOL(notifications_enabled);
  return value;
}

DictionaryValue* GetUpdatesCallerInfoToValue(
    const sync_pb::GetUpdatesCallerInfo& proto) {
  DictionaryValue* value = new DictionaryValue();
  SET_ENUM(source, GetUpdatesSourceString);
  SET_BOOL(notifications_enabled);
  return value;
}
