Bug 1171931 - Refactor duplicated code using XRE_IsParent/ContentProcess. r=froydnj

parser/html/nsHtml5StreamParser.cpp

@@ -947,7 +947,7 @@ nsHtml5StreamParser::OnStartRequest(nsIRequest* aRequest, nsISupports* aContext)
   if (NS_FAILED(rv)) {
     // for now skip warning if we're on child process, since we don't support
     // off-main thread delivery there yet.  This will change with bug 1015466
-    if (XRE_GetProcessType() != GeckoProcessType_Content) {
+    if (!XRE_IsContentProcess()) {
       NS_WARNING("Failed to retarget HTML data delivery to the parser thread.");
     }
   }