Bug 1407334. Add some overloads for src/href getters that don't need a principal, for Thunderbird to use. r=kmag

MozReview-Commit-ID: 23iOeNDMXNk

dom/html/HTMLImageElement.h

@@ -143,9 +143,17 @@ public:
     SetHTMLAttr(nsGkAtoms::alt, aAlt, aError);
   }
   void GetSrc(nsAString& aSrc, nsIPrincipal&)
+  {
+    GetSrc(aSrc);
+  }
+  void GetSrc(nsAString& aSrc)
   {
     GetURIAttr(nsGkAtoms::src, nullptr, aSrc);
   }
+  void SetSrc(const nsAString& aSrc, ErrorResult& aError)
+  {
+    SetHTMLAttr(nsGkAtoms::src, aSrc, aError);
+  }
   void SetSrc(const nsAString& aSrc, nsIPrincipal& aTriggeringPrincipal, ErrorResult& aError)
   {
     SetHTMLAttr(nsGkAtoms::src, aSrc, aTriggeringPrincipal, aError);

dom/html/HTMLLinkElement.h

@@ -95,6 +95,10 @@ public:
   {
     SetHTMLAttr(nsGkAtoms::href, aHref, aTriggeringPrincipal, aRv);
   }
+  void SetHref(const nsAString& aHref, ErrorResult& aRv)
+  {
+    SetHTMLAttr(nsGkAtoms::href, aHref, aRv);
+  }
   void GetCrossOrigin(nsAString& aResult)
   {
     // Null for both missing and invalid defaults is ok, since we