From c8b89feae8a93db677d1398d1a50bedb2094e57a Mon Sep 17 00:00:00 2001
From: FranklinDM <mrmineshafter17@gmail.com>
Date: Mon, 4 Apr 2022 23:01:53 +0800
Subject: Issue #21 - Change MappedAttrParser to store its nsIPrincipal instead
 of nsSVGElement

This reverts part 2 of Bug 968923 since this was only modified to accommodate use counters.
---
 dom/svg/nsSVGElement.cpp | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)

diff --git a/dom/svg/nsSVGElement.cpp b/dom/svg/nsSVGElement.cpp
index 97578b81c7..39998c1541 100644
--- a/dom/svg/nsSVGElement.cpp
+++ b/dom/svg/nsSVGElement.cpp
@@ -1150,7 +1150,7 @@ public:
   MappedAttrParser(css::Loader* aLoader,
                    nsIURI* aDocURI,
                    already_AddRefed<nsIURI> aBaseURI,
-                   nsSVGElement* aElement);
+                   nsIPrincipal* aNodePrincipal);
   ~MappedAttrParser();
 
   // Parses a mapped attribute value.
@@ -1170,20 +1170,18 @@ private:
   // Arguments for nsCSSParser::ParseProperty
   nsIURI*           mDocURI;
   nsCOMPtr<nsIURI>  mBaseURI;
+  nsIPrincipal*     mNodePrincipal;
 
   // Declaration for storing parsed values (lazily initialized)
   css::Declaration* mDecl;
-
-  // For reporting use counters
-  nsSVGElement*     mElement;
 };
 
 MappedAttrParser::MappedAttrParser(css::Loader* aLoader,
                                    nsIURI* aDocURI,
                                    already_AddRefed<nsIURI> aBaseURI,
-                                   nsSVGElement* aElement)
+                                   nsIPrincipal* aNodePrincipal)
   : mParser(aLoader), mDocURI(aDocURI), mBaseURI(aBaseURI),
-    mDecl(nullptr), mElement(aElement)
+    mNodePrincipal(aNodePrincipal), mDecl(nullptr)
 {
 }
 
@@ -1210,7 +1208,7 @@ MappedAttrParser::ParseMappedAttrValue(nsIAtom* aMappedAttrName,
   if (propertyID != eCSSProperty_UNKNOWN) {
     bool changed; // outparam for ParseProperty. (ignored)
     mParser.ParseProperty(propertyID, aMappedAttrValue, mDocURI, mBaseURI,
-                          mElement->NodePrincipal(), mDecl, &changed, false, true);
+                          mNodePrincipal, mDecl, &changed, false, true);
     return;
   }
   MOZ_ASSERT(aMappedAttrName == nsGkAtoms::lang,
@@ -1257,7 +1255,7 @@ nsSVGElement::UpdateContentStyleRule()
 
   nsIDocument* doc = OwnerDoc();
   MappedAttrParser mappedAttrParser(doc->CSSLoader(), doc->GetDocumentURI(),
-                                    GetBaseURI(), this);
+                                    GetBaseURI(), NodePrincipal());
 
   for (uint32_t i = 0; i < attrCount; ++i) {
     const nsAttrName* attrName = mAttrsAndChildren.AttrNameAt(i);
@@ -1330,7 +1328,7 @@ nsSVGElement::UpdateAnimatedContentStyleRule()
   }
 
   MappedAttrParser mappedAttrParser(doc->CSSLoader(), doc->GetDocumentURI(),
-                                    GetBaseURI(), this);
+                                    GetBaseURI(), NodePrincipal());
   doc->PropertyTable(SMIL_MAPPED_ATTR_ANIMVAL)->
     Enumerate(this, ParseMappedAttrAnimValueCallback, &mappedAttrParser);
  
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