diff --git a/dom/base/nsDOMClassInfo.cpp b/dom/base/nsDOMClassInfo.cpp
index bc3a6fefaa..1ea93ed4ce 100644
--- a/dom/base/nsDOMClassInfo.cpp
+++ b/dom/base/nsDOMClassInfo.cpp
@@ -67,7 +67,6 @@
 #include "nsIDOMEventTarget.h"
 
 // CSS related includes
-#include "nsCSSRules.h"
 #include "nsIDOMCSSRule.h"
 #include "nsMemory.h"
 
@@ -1890,31 +1889,6 @@ nsEventTargetSH::PreserveWrapper(nsISupports *aNative)
   target->PreserveWrapper(aNative);
 }
 
-// CSS rule helper
-NS_IMETHODIMP
-nsCSSRuleSH::PreCreate(nsISupports *nativeObj, JSContext *cx,
-                       JSObject *aGlobalObj, JSObject **parentObj)
-{
-  JS::Rooted<JSObject*> globalObj(cx, aGlobalObj);
-  nsCOMPtr<nsIDOMCSSRule> rule = do_QueryInterface(nativeObj);
-  if (!rule) {
-    return NS_ERROR_UNEXPECTED;
-  }
-  css::Rule* cssRule = rule->GetCSSRule();
-  nsIDocument* doc = cssRule->GetDocument();
-  if (!doc) {
-    *parentObj = globalObj;
-    return NS_OK;
-  }
-
-  nsIGlobalObject* global = doc->GetScopeObject();
-  if (!global) {
-    return NS_ERROR_UNEXPECTED;
-  }
-  *parentObj = global->GetGlobalJSObject();
-  return *parentObj ? NS_OK : NS_ERROR_FAILURE;
-}
-
 // nsIDOMEventListener::HandleEvent() 'this' converter helper
 
 NS_INTERFACE_MAP_BEGIN(nsEventListenerThisTranslator)
diff --git a/dom/base/nsDOMClassInfo.h b/dom/base/nsDOMClassInfo.h
index 0d70b040bc..48f4966f0f 100644
--- a/dom/base/nsDOMClassInfo.h
+++ b/dom/base/nsDOMClassInfo.h
@@ -172,29 +172,6 @@ public:
   }
 };
 
-
-// Makes sure that we always create our wrapper in the right global, so we won't
-// cache one from the wrong global.
-class nsCSSRuleSH : public nsDOMGenericSH
-{
-protected:
-  explicit nsCSSRuleSH(nsDOMClassInfoData* aData) : nsDOMGenericSH(aData)
-  {
-  }
-
-  virtual ~nsCSSRuleSH()
-  {
-  }
-public:
-  NS_IMETHOD PreCreate(nsISupports *nativeObj, JSContext *cx,
-                       JSObject *globalObj, JSObject **parentObj) override;
-
-  static nsIClassInfo *doCreate(nsDOMClassInfoData* aData)
-  {
-    return new nsCSSRuleSH(aData);
-  }
-};
-
 // A place to hang some static methods that we should really consider
 // moving to be nsGlobalWindow member methods.  See bug 1062418.
 class nsWindowSH
diff --git a/dom/bindings/Bindings.conf b/dom/bindings/Bindings.conf
index ffb4edbf5d..f484c59e53 100644
--- a/dom/bindings/Bindings.conf
+++ b/dom/bindings/Bindings.conf
@@ -265,7 +265,6 @@ DOMInterfaces = {
 },
 
 'CSSRule': {
-    'hasXPConnectImpls': True,
     'concrete': False,
     'nativeType': 'mozilla::css::Rule'
 },
diff --git a/layout/style/Rule.h b/layout/style/Rule.h
index 3537bad449..9586edffd4 100644
--- a/layout/style/Rule.h
+++ b/layout/style/Rule.h
@@ -19,11 +19,6 @@ struct nsRuleData;
 template<class T> struct already_AddRefed;
 class nsHTMLCSSStyleSheet;
 
-// Temporary IID for the nsIDOMCSSRule interface {ebb427f1-a935-480b-bd9b-bb0e3bd387a9}
-#define NS_IDOM_CSSRULE_IID     \
-{ 0xebb427f1, 0xa935, 0x480b,   \
- { 0xbd, 0x9b, 0xbb, 0x0e, 0x3b, 0xd3, 0x87, 0xa9 } }
-
 namespace mozilla {
 namespace css {
 class GroupRule;
@@ -51,8 +46,6 @@ protected:
   virtual ~Rule() {}
 
 public:
-  NS_DECLARE_STATIC_IID_ACCESSOR(NS_IDOM_CSSRULE_IID)
-
   NS_DECL_CYCLE_COLLECTING_ISUPPORTS
   NS_DECL_CYCLE_COLLECTION_SKIPPABLE_SCRIPT_HOLDER_CLASS(Rule)
   // Return true if this rule is known to be a cycle collection leaf, in the
@@ -145,8 +138,6 @@ protected:
   uint32_t          mColumnNumber;
 };
 
-NS_DEFINE_STATIC_IID_ACCESSOR(Rule, NS_IDOM_CSSRULE_IID)
-
 } // namespace css
 } // namespace mozilla