3 files changed, 27 insertions, 6 deletions
diff --git a/dom/html/HTMLElement.cpp b/dom/html/HTMLElement.cpp
index b2f23b931..d3901bdf3 100644
--- a/dom/html/HTMLElement.cpp
+++ b/dom/html/HTMLElement.cpp
@@ -52,3 +52,12 @@ NS_NewHTMLElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
 {
   return new mozilla::dom::HTMLElement(aNodeInfo);
 }
+
+// Distinct from the above in order to have function pointer that compared unequal
+// to a function pointer to the above.
+nsGenericHTMLElement*
+NS_NewCustomElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
+                    mozilla::dom::FromParser aFromParser)
+{
+  return new mozilla::dom::HTMLElement(aNodeInfo);
+}
diff --git a/dom/html/nsGenericHTMLElement.h b/dom/html/nsGenericHTMLElement.h
index 72039f266..edef2eeef 100644
--- a/dom/html/nsGenericHTMLElement.h
+++ b/dom/html/nsGenericHTMLElement.h
@@ -1590,6 +1590,15 @@ protected:
   NS_INTERFACE_MAP_ENTRY_CONDITIONAL(_interface,                              \
                                      mNodeInfo->Equals(nsGkAtoms::_tag))
 
+namespace mozilla {
+namespace dom {
+
+typedef nsGenericHTMLElement* (*HTMLContentCreatorFunction)(
+  already_AddRefed<mozilla::dom::NodeInfo>&&,
+  mozilla::dom::FromParser aFromParser);
+
+} // namespace dom
+} // namespace mozilla
 
 /**
  * A macro to declare the NS_NewHTMLXXXElement() functions.
@@ -1638,6 +1647,13 @@ nsGenericHTMLElement*
 NS_NewHTMLElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
                   mozilla::dom::FromParser aFromParser = mozilla::dom::NOT_FROM_PARSER);
 
+// Distinct from the above in order to have function pointer that compared unequal
+// to a function pointer to the above.
+nsGenericHTMLElement*
+NS_NewCustomElement(
+  already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
+  mozilla::dom::FromParser aFromParser = mozilla::dom::NOT_FROM_PARSER);
+
 NS_DECLARE_NS_NEW_HTML_ELEMENT(Shared)
 NS_DECLARE_NS_NEW_HTML_ELEMENT(SharedList)
 NS_DECLARE_NS_NEW_HTML_ELEMENT(SharedObject)
diff --git a/dom/html/nsHTMLContentSink.cpp b/dom/html/nsHTMLContentSink.cpp
index 87ae2a4ac..2827f5ff6 100644
--- a/dom/html/nsHTMLContentSink.cpp
+++ b/dom/html/nsHTMLContentSink.cpp
@@ -84,10 +84,6 @@ using namespace mozilla::dom;
 
 //----------------------------------------------------------------------
 
-typedef nsGenericHTMLElement*
-  (*contentCreatorCallback)(already_AddRefed<mozilla::dom::NodeInfo>&&,
-                            FromParser aFromParser);
-
 nsGenericHTMLElement*
 NS_NewHTMLNOTUSEDElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
                          FromParser aFromParser)
@@ -98,7 +94,7 @@ NS_NewHTMLNOTUSEDElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
 
 #define HTML_TAG(_tag, _classname, _interfacename) NS_NewHTML##_classname##Element,
 #define HTML_OTHER(_tag) NS_NewHTMLNOTUSEDElement,
-static const contentCreatorCallback sContentCreatorCallbacks[] = {
+static const HTMLContentCreatorFunction sHTMLContentCreatorFunctions[] = {
   NS_NewHTMLUnknownElement,
 #include "nsHTMLTagList.h"
 #undef HTML_TAG
@@ -383,7 +379,7 @@ CreateHTMLElement(uint32_t aNodeType,
                aNodeType == eHTMLTag_userdefined,
                "aNodeType is out of bounds");
 
-  contentCreatorCallback cb = sContentCreatorCallbacks[aNodeType];
+  HTMLContentCreatorFunction cb = sHTMLContentCreatorFunctions[aNodeType];
 
   NS_ASSERTION(cb != NS_NewHTMLNOTUSEDElement,
                "Don't know how to construct tag element!");