Bug 1465457 - Remove assertion in nsChromeRegistryContent::IsLocaleRTL requiring "global" package r=NeilDeakin

We are running certain xul reftests in the content process registered in chrome://reftest,
and it's OK for them to call this function (which is triggered at end of XUL doc loading).

Differential Revision: https://phabricator.services.mozilla.com/D21220

--HG--
extra : moz-landing-system : lando

chrome/nsChromeRegistryContent.cpp

@@ -170,10 +170,6 @@ nsChromeRegistryContent::CheckForNewChrome() { CONTENT_NOT_IMPLEMENTED(); }
 NS_IMETHODIMP
 nsChromeRegistryContent::IsLocaleRTL(const nsACString& aPackage,
                                      bool* aResult) {
-  if (aPackage != nsDependentCString("global")) {
-    NS_ERROR("Packages other than global unavailable");
-    return NS_ERROR_NOT_AVAILABLE;
-  }
   *aResult = GetDirectionForLocale(mLocale);
   return NS_OK;
 }