Change custom element state in documents without browsing context

third_party/WebKit/Source/core/dom/custom/CustomElement.cpp

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/dom/custom/CustomElement.h"
 
 #include "core/dom/Document.h"
 #include "core/dom/QualifiedName.h"
 #include "core/dom/custom/CEReactionsScope.h"
 #include "core/dom/custom/CustomElementDefinition.h"
@@ skipping 63 matching lines @@
         "font-face-format",
         "font-face-name",
         "missing-glyph",
     }));
     return !hyphenContainingElementNames.contains(name);
 }
 
 bool CustomElement::shouldCreateCustomElement(Document& document, const AtomicString& localName)
 {
     return RuntimeEnabledFeatures::customElementsV1Enabled()
-        && document.frame() && isValidName(localName);
+        && isValidName(localName);
 }
 
 bool CustomElement::shouldCreateCustomElement(Document& document, const QualifiedName& tagName)
 {
     return shouldCreateCustomElement(document, tagName.localName())
         && tagName.namespaceURI() == HTMLNames::xhtmlNamespaceURI;
 }
 
 static CustomElementDefinition* definitionForName(const Document& document, const QualifiedName& name)
 {
@@ skipping 145 matching lines @@
     CustomElementsRegistry* registry = CustomElement::registry(*element);
     if (!registry)
         return;
     if (CustomElementDefinition* definition = registry->definitionForName(element->localName()))
         definition->enqueueUpgradeReaction(element);
     else
         registry->addCandidate(element);
 }
 
 } // namespace blink