diff --git a/dom/base/nsContentCID.h b/dom/base/nsContentCID.h
index 0878058ed1a4..7336f8bdfd60 100644
--- a/dom/base/nsContentCID.h
+++ b/dom/base/nsContentCID.h
@@ -113,11 +113,6 @@
 #define NS_XULCONTROLLERS_CID \
 { 0x1f5c1721, 0x7dc3, 0x11d3, { 0xbf, 0x87, 0x0, 0x10, 0x5a, 0x1b, 0x6, 0x27 } }
 
-
-// {BFD05264-834C-11d2-8EAC-00805F29F371}
-#define NS_XULSORTSERVICE_CID \
-{ 0xbfd05264, 0x834c, 0x11d2, { 0x8e, 0xac, 0x0, 0x80, 0x5f, 0x29, 0xf3, 0x71 } }
-
 // {3D262D00-8B5A-11d2-8EB0-00805F29F370}
 #define NS_XULTEMPLATEBUILDER_CID \
 { 0x3d262d00, 0x8b5a, 0x11d2, { 0x8e, 0xb0, 0x0, 0x80, 0x5f, 0x29, 0xf3, 0x70 } }
diff --git a/dom/xul/moz.build b/dom/xul/moz.build
index c01839113caf..47e5b310c035 100644
--- a/dom/xul/moz.build
+++ b/dom/xul/moz.build
@@ -18,6 +18,7 @@ if CONFIG['MOZ_XUL']:
     EXPORTS += [
         'nsXULCommandDispatcher.h',
         'nsXULElement.h',
+        'nsXULSortService.h',
     ]
 
     EXPORTS.mozilla.dom += [
diff --git a/dom/xul/nsXULSortService.cpp b/dom/xul/nsXULSortService.cpp
index 41e5f9793e5d..09c7d6e94e04 100644
--- a/dom/xul/nsXULSortService.cpp
+++ b/dom/xul/nsXULSortService.cpp
@@ -353,11 +353,3 @@ XULSortServiceImpl::Sort(Element* aNode,
 
   return rv;
 }
-
-nsresult
-NS_NewXULSortService(nsIXULSortService** sortService)
-{
-  *sortService = new XULSortServiceImpl();
-  NS_ADDREF(*sortService);
-  return NS_OK;
-}
diff --git a/dom/xul/nsXULSortService.h b/dom/xul/nsXULSortService.h
index 543f51a7ed9b..1e905e97e433 100644
--- a/dom/xul/nsXULSortService.h
+++ b/dom/xul/nsXULSortService.h
@@ -67,14 +67,12 @@ struct contentSortInfo {
 //
 class XULSortServiceImpl : public nsIXULSortService
 {
-protected:
+public:
   XULSortServiceImpl(void) {}
+
+protected:
   virtual ~XULSortServiceImpl(void) {}
 
-  friend nsresult NS_NewXULSortService(nsIXULSortService** mgr);
-
-private:
-
 public:
   // nsISupports
   NS_DECL_ISUPPORTS
diff --git a/layout/build/nsLayoutModule.cpp b/layout/build/nsLayoutModule.cpp
index 31e501831978..b53df3bf5701 100644
--- a/layout/build/nsLayoutModule.cpp
+++ b/layout/build/nsLayoutModule.cpp
@@ -116,7 +116,6 @@ class nsIDocumentLoaderFactory;
 
 #ifdef MOZ_XUL
 #include "XULDocument.h"
-#include "nsIXULSortService.h"
 #endif
 
 static void Shutdown();
@@ -341,7 +340,6 @@ MAKE_CTOR(CreateXHTMLContentSerializer,   nsIContentSerializer,        NS_NewXHT
 MAKE_CTOR(CreatePlainTextSerializer,      nsIContentSerializer,        NS_NewPlainTextSerializer)
 MAKE_CTOR(CreateContentPolicy,            nsIContentPolicy,            NS_NewContentPolicy)
 #ifdef MOZ_XUL
-MAKE_CTOR(CreateXULSortService,           nsIXULSortService,           NS_NewXULSortService)
 MAKE_CTOR(CreateXULDocument,              nsIDocument,                 NS_NewXULDocument)
 // NS_NewXULControllers
 #endif
@@ -467,7 +465,6 @@ NS_DEFINE_NAMED_CID(NS_DATADOCUMENTCONTENTPOLICY_CID);
 NS_DEFINE_NAMED_CID(NS_NODATAPROTOCOLCONTENTPOLICY_CID);
 NS_DEFINE_NAMED_CID(NS_XULCONTROLLERS_CID);
 #ifdef MOZ_XUL
-NS_DEFINE_NAMED_CID(NS_XULSORTSERVICE_CID);
 NS_DEFINE_NAMED_CID(NS_XULDOCUMENT_CID);
 #endif
 NS_DEFINE_NAMED_CID(NS_CONTENT_DOCUMENT_LOADER_FACTORY_CID);
@@ -562,7 +559,6 @@ static const mozilla::Module::CIDEntry kLayoutCIDs[] = {
   { &kNS_NODATAPROTOCOLCONTENTPOLICY_CID, false, nullptr, nsNoDataProtocolContentPolicyConstructor },
   { &kNS_XULCONTROLLERS_CID, false, nullptr, NS_NewXULControllers },
 #ifdef MOZ_XUL
-  { &kNS_XULSORTSERVICE_CID, false, nullptr, CreateXULSortService },
   { &kNS_XULDOCUMENT_CID, false, nullptr, CreateXULDocument },
 #endif
   { &kNS_CONTENT_DOCUMENT_LOADER_FACTORY_CID, false, nullptr, CreateContentDLF },
@@ -654,9 +650,6 @@ static const mozilla::Module::ContractIDEntry kLayoutContracts[] = {
   { NS_DATADOCUMENTCONTENTPOLICY_CONTRACTID, &kNS_DATADOCUMENTCONTENTPOLICY_CID },
   { NS_NODATAPROTOCOLCONTENTPOLICY_CONTRACTID, &kNS_NODATAPROTOCOLCONTENTPOLICY_CID },
   { "@mozilla.org/xul/xul-controllers;1", &kNS_XULCONTROLLERS_CID },
-#ifdef MOZ_XUL
-  { "@mozilla.org/xul/xul-sort-service;1", &kNS_XULSORTSERVICE_CID },
-#endif
   { CONTENT_DLF_CONTRACTID, &kNS_CONTENT_DOCUMENT_LOADER_FACTORY_CID },
   { NS_JSPROTOCOLHANDLER_CONTRACTID, &kNS_JSPROTOCOLHANDLER_CID },
   { PLUGIN_DLF_CONTRACTID, &kNS_PLUGINDOCLOADERFACTORY_CID },
diff --git a/layout/xul/tree/nsTreeContentView.cpp b/layout/xul/tree/nsTreeContentView.cpp
index fec3f886e304..fc3a763c2ea8 100644
--- a/layout/xul/tree/nsTreeContentView.cpp
+++ b/layout/xul/tree/nsTreeContentView.cpp
@@ -11,7 +11,7 @@
 #include "nsTreeContentView.h"
 #include "ChildIterator.h"
 #include "nsError.h"
-#include "nsIXULSortService.h"
+#include "nsXULSortService.h"
 #include "nsTreeBodyFrame.h"
 #include "nsTreeColumns.h"
 #include "mozilla/ErrorResult.h"
@@ -660,26 +660,24 @@ nsTreeContentView::CycleHeader(nsTreeColumn& aColumn, ErrorResult& aError)
   nsAutoString sort;
   column->GetAttr(kNameSpaceID_None, nsGkAtoms::sort, sort);
   if (!sort.IsEmpty()) {
-    nsCOMPtr<nsIXULSortService> xs = do_GetService("@mozilla.org/xul/xul-sort-service;1");
-    if (xs) {
-      nsAutoString sortdirection;
-      static Element::AttrValuesArray strings[] =
-        {&nsGkAtoms::ascending, &nsGkAtoms::descending, nullptr};
-      switch (column->FindAttrValueIn(kNameSpaceID_None,
-                                      nsGkAtoms::sortDirection,
-                                      strings, eCaseMatters)) {
-        case 0: sortdirection.AssignLiteral("descending"); break;
-        case 1: sortdirection.AssignLiteral("natural"); break;
-        default: sortdirection.AssignLiteral("ascending"); break;
-      }
-
-      nsAutoString hints;
-      column->GetAttr(kNameSpaceID_None, nsGkAtoms::sorthints, hints);
-      sortdirection.Append(' ');
-      sortdirection += hints;
-
-      xs->Sort(mRoot, sort, sortdirection);
+    nsCOMPtr<nsIXULSortService> xs = new XULSortServiceImpl();
+    nsAutoString sortdirection;
+    static Element::AttrValuesArray strings[] =
+      {&nsGkAtoms::ascending, &nsGkAtoms::descending, nullptr};
+    switch (column->FindAttrValueIn(kNameSpaceID_None,
+                                    nsGkAtoms::sortDirection,
+                                    strings, eCaseMatters)) {
+      case 0: sortdirection.AssignLiteral("descending"); break;
+      case 1: sortdirection.AssignLiteral("natural"); break;
+      default: sortdirection.AssignLiteral("ascending"); break;
     }
+
+    nsAutoString hints;
+    column->GetAttr(kNameSpaceID_None, nsGkAtoms::sorthints, hints);
+    sortdirection.Append(' ');
+    sortdirection += hints;
+
+    xs->Sort(mRoot, sort, sortdirection);
   }
 }