isRequiredFormControl  820 Source/core/css/SelectorChecker.cpp             return element.isRequiredFormControl();
isRequiredFormControl  446 Source/core/dom/Element.h     virtual bool isRequiredFormControl() const { return false; }
isRequiredFormControl  356 Source/core/html/HTMLInputElement.h     virtual bool isOptionalFormControl() const OVERRIDE FINAL { return !isRequiredFormControl(); }
isRequiredFormControl  357 Source/core/html/HTMLInputElement.h     virtual bool isRequiredFormControl() const OVERRIDE FINAL;
isRequiredFormControl  157 Source/core/html/HTMLSelectElement.h     virtual bool isOptionalFormControl() const OVERRIDE { return !isRequiredFormControl(); }
isRequiredFormControl  158 Source/core/html/HTMLSelectElement.h     virtual bool isRequiredFormControl() const OVERRIDE;
isRequiredFormControl   84 Source/core/html/HTMLTextAreaElement.h     virtual bool isOptionalFormControl() const OVERRIDE { return !isRequiredFormControl(); }
isRequiredFormControl   85 Source/core/html/HTMLTextAreaElement.h     virtual bool isRequiredFormControl() const OVERRIDE { return isRequired(); }
isRequiredFormControl  122 Source/core/html/HTMLTextAreaElement.h     bool valueMissing(const String& value) const { return isRequiredFormControl() && !isDisabledOrReadOnly() && value.isEmpty(); }