Implement reportValidity()

Source/core/html/HTMLFormElement.h

Index: Source/core/html/HTMLFormElement.h
diff --git a/Source/core/html/HTMLFormElement.h b/Source/core/html/HTMLFormElement.h
index e1095b9ea98aff5864f233c25c5a8ce9d6faa307..7404e5a885191d20bf38a323627d2d288cd31fd0 100644
--- a/Source/core/html/HTMLFormElement.h
+++ b/Source/core/html/HTMLFormElement.h
@@ -95,6 +95,7 @@ public:
     HTMLFormControlElement* defaultButton() const;
 
     bool checkValidity();
+    bool reportValidity();
     virtual bool matchesValidityPseudoClasses() const override final;
     virtual bool isValidElement() override final;
 
@@ -146,12 +147,12 @@ private:
     void collectImageElements(Node& root, WillBeHeapVector<RawPtrWillBeMember<HTMLImageElement> >&);
 
     // Returns true if the submission should proceed.
-    bool validateInteractively(Event*);
+    bool validateInteractively();
 
     // Validates each of the controls, and stores controls of which 'invalid'
     // event was not canceled to the specified vector. Returns true if there
     // are any invalid controls in this form.
-    bool checkInvalidControlsAndCollectUnhandled(WillBeHeapVector<RefPtrWillBeMember<FormAssociatedElement> >*, CheckValidityEventBehavior);
+    bool checkInvalidControlsAndCollectUnhandled(WillBeHeapVector<RefPtrWillBeMember<HTMLFormControlElement> >*, CheckValidityEventBehavior);
 
     Element* elementFromPastNamesMap(const AtomicString&);
     void addToPastNamesMap(Element*, const AtomicString& pastName);