Bug 229925 - Do not dispatch event to label target if interactive content is found between the event target and the label. r=smaug

dom/html/HTMLObjectElement.cpp

@@ -45,6 +45,12 @@ HTMLObjectElement::~HTMLObjectElement()
   DestroyImageLoadingContent();
 }
 
+bool
+HTMLObjectElement::IsInteractiveHTMLContent() const
+{
+  return HasAttr(kNameSpaceID_None, nsGkAtoms::usemap);
+}
+
 bool
 HTMLObjectElement::IsDoneAddingChildren()
 {