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/HTMLVideoElement.cpp

@@ -126,6 +126,12 @@ nsresult HTMLVideoElement::SetAcceptHeader(nsIHttpChannel* aChannel)
                                     false);
 }
 
+bool
+HTMLVideoElement::IsInteractiveHTMLContent() const
+{
+  return HasAttr(kNameSpaceID_None, nsGkAtoms::controls);
+}
+
 uint32_t HTMLVideoElement::MozParsedFrames() const
 {
   MOZ_ASSERT(NS_IsMainThread(), "Should be on main thread.");