Bug 1444580: Devirtualize PaymentRequest stuff. r=smaug

This one was easy, the bit was already in the right place :)

MozReview-Commit-ID: 79KJNsIXIyb

dom/base/nsDocument.cpp

@@ -4077,18 +4077,6 @@ SubDocInitEntry(PLDHashEntryHdr *entry, const void *key)
   e->mSubDocument = nullptr;
 }
 
-bool
-nsDocument::AllowPaymentRequest() const
-{
-  return mAllowPaymentRequest;
-}
-
-void
-nsDocument::SetAllowPaymentRequest(bool aAllowPaymentRequest)
-{
-  mAllowPaymentRequest = aAllowPaymentRequest;
-}
-
 nsresult
 nsIDocument::SetSubDocumentFor(Element* aElement, nsIDocument* aSubDoc)
 {

dom/base/nsDocument.h

@@ -752,9 +752,6 @@ public:
   // DOM-exposed fullscreen API
   bool FullscreenEnabled(mozilla::dom::CallerType aCallerType) override;
 
-  virtual bool AllowPaymentRequest() const override;
-  virtual void SetAllowPaymentRequest(bool aIsAllowPaymentRequest) override;
-
   void RequestPointerLock(Element* aElement,
                           mozilla::dom::CallerType aCallerType) override;
   bool SetPointerLock(Element* aElement, int aCursorStyle);

dom/base/nsIDocument.h

@@ -3274,8 +3274,15 @@ public:
     --mIgnoreOpensDuringUnloadCounter;
   }
 
-  virtual bool AllowPaymentRequest() const = 0;
-  virtual void SetAllowPaymentRequest(bool aAllowPaymentRequest) = 0;
+  bool AllowPaymentRequest() const
+  {
+    return mAllowPaymentRequest;
+  }
+
+  void SetAllowPaymentRequest(bool aAllowPaymentRequest)
+  {
+    mAllowPaymentRequest = aAllowPaymentRequest;
+  }
 
   bool IsShadowDOMEnabled() const
   {