CustomElements: createCustomElementSync accepts a definition

third_party/WebKit/Source/core/dom/custom/CustomElement.h

Index: third_party/WebKit/Source/core/dom/custom/CustomElement.h
diff --git a/third_party/WebKit/Source/core/dom/custom/CustomElement.h b/third_party/WebKit/Source/core/dom/custom/CustomElement.h
index 7ae3bca0790325241552832c4462fbab82a31fbb..973fe3617586984b289c649534bcb037a8955f8b 100644
--- a/third_party/WebKit/Source/core/dom/custom/CustomElement.h
+++ b/third_party/WebKit/Source/core/dom/custom/CustomElement.h
@@ -62,17 +62,18 @@ class CORE_EXPORT CustomElement {
     return !isHyphenatedSpecElementName(name);
   }
 
-  static bool shouldCreateCustomElement(const AtomicString& localName);
+  static bool shouldCreateCustomElement(const AtomicString&);
   static bool shouldCreateCustomElement(const QualifiedName&);
-
-  static HTMLElement* createCustomElementSync(
-      Document&,
-      const AtomicString& localName,
-      const AtomicString& is = AtomicString());
-  static HTMLElement* createCustomElementSync(
-      Document&,
-      const QualifiedName&,
-      const AtomicString& is = AtomicString());
+  static bool shouldCreateCustomizedBuiltinElement(const AtomicString&);

[dominicc (has gone to gerrit), 2016/11/17 01:39:21]

I think you *do* want to name this parameter. It's a local name, right? To
contrast it to shouldCreateCustomElement (that one's a custom element name, not
necessarily a tag name.)

+  static bool shouldCreateCustomizedBuiltinElement(const QualifiedName&);
+
+  static HTMLElement* createCustomElementSync(Document&, const QualifiedName&);
+  static HTMLElement* createCustomElementSync(Document&,
+                                              const AtomicString& localName,
+                                              CustomElementDefinition*);
+  static HTMLElement* createCustomElementSync(Document&,
+                                              const QualifiedName&,
+                                              CustomElementDefinition*);
   static HTMLElement* createCustomElementAsync(Document&, const QualifiedName&);
 
   static HTMLElement* createFailedElement(Document&, const QualifiedName&);