Track whether an element was inserted via document.write

third_party/WebKit/Source/build/scripts/templates/ElementFactory.cpp.tmpl

 {% from "macros.tmpl" import license %}
 {{ license() }}
 
 #include "{{namespace}}ElementFactory.h"
 
 #include "{{namespace}}Names.h"
 {% for tag in tags|groupby('interface') %}
 #include "core/{{namespace|lower}}/{{tag[0]}}.h"
 {% endfor %}
 {% if fallback_interface %}
@@ skipping 30 matching lines @@
     bool createdByParser)
 {
     {% if tag.runtimeEnabled %}
     if (!RuntimeEnabledFeatures::{{tag.runtimeEnabled}}Enabled())
         return {{fallback_interface}}::create({{tag|symbol}}Tag, document);
     {% endif %}
     return {{tag.interface}}::create(
         {%- if tag.multipleTagNames %}{{tag|symbol}}Tag, {% endif -%}
         document
         {%- if namespace == 'HTML' and tag.constructorNeedsFormElement %}, formElement{% endif -%}
-        {%- if tag.constructorNeedsCreatedByParser %}, createdByParser{% endif -%}
+        {%- if tag.constructorNeedsCreatedByParser %}, createdByParser ? ParserInserted : DefaultContext{% endif -%}
     );
 }
 {% endfor %}
 
 struct Create{{namespace}}FunctionMapData {
   const QualifiedName& tag;
   ConstructorFunction func;
 };
 
 static void create{{namespace}}FunctionMap()
@@ skipping 15 matching lines @@
     const AtomicString& localName,
     Document& document,
     {% if namespace == 'HTML' %}
     HTMLFormElement* formElement,
     {% endif %}
     bool createdByParser)
 {
     if (!g_constructors)
         create{{namespace}}FunctionMap();
     if (ConstructorFunction function = g_constructors->get(localName))
-        return function(document, {% if namespace == 'HTML' %}formElement, {% endif %}createdByParser);
+        return function(document, {% if namespace == 'HTML' %}formElement, {% endif %}createdByParser ? ParserInserted : DefaultContext);
 
     if (document.registrationContext() && CustomElement::isValidName(localName)) {
         RawPtr<Element> element = document.registrationContext()->createCustomTagElement(document, QualifiedName(nullAtom, localName, {{namespace_prefix}}NamespaceURI));
         ASSERT_WITH_SECURITY_IMPLICATION(element->is{{namespace}}Element());
         return static_pointer_cast<{{namespace}}Element>(element.release());
     }
 
     return {{fallback_interface}}::create(QualifiedName(nullAtom, localName, {{namespace_prefix}}NamespaceURI), document);
 }
 
 } // namespace blink