Upgrade in-document custom elements when an element is defined.

third_party/WebKit/Source/core/dom/Element.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 Apple Inc. All rights reserved.
  *           (C) 2007 Eric Seidel (eric@webkit.org)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 55 matching lines @@
 #include "core/dom/NamedNodeMap.h"
 #include "core/dom/NodeComputedStyle.h"
 #include "core/dom/NodeIntersectionObserverData.h"
 #include "core/dom/PresentationAttributeStyle.h"
 #include "core/dom/PseudoElement.h"
 #include "core/dom/ScriptableDocumentParser.h"
 #include "core/dom/SelectorQuery.h"
 #include "core/dom/StyleChangeReason.h"
 #include "core/dom/StyleEngine.h"
 #include "core/dom/Text.h"
+#include "core/dom/custom/CustomElement.h"
+#include "core/dom/custom/CustomElementsRegistry.h"
 #include "core/dom/custom/V0CustomElement.h"
 #include "core/dom/custom/V0CustomElementRegistrationContext.h"
 #include "core/dom/shadow/InsertionPoint.h"
 #include "core/dom/shadow/ShadowRoot.h"
 #include "core/dom/shadow/ShadowRootInit.h"
 #include "core/dom/shadow/SlotAssignment.h"
 #include "core/editing/EditingUtilities.h"
 #include "core/editing/FrameSelection.h"
 #include "core/editing/iterators/TextIterator.h"
 #include "core/editing/serializers/Serialization.h"
@@ skipping 1328 matching lines @@
     if (!insertionPoint->isInTreeScope())
         return InsertionDone;
 
     if (hasRareData()) {
         ElementRareData* rareData = elementRareData();
         rareData->clearClassListValueForQuirksMode();
         if (rareData->intersectionObserverData())
             rareData->intersectionObserverData()->activateValidIntersectionObservers(*this);
     }
 
-    if (isUpgradedV0CustomElement() && inShadowIncludingDocument())
-        V0CustomElement::didAttach(this, document());
+    if (inShadowIncludingDocument()) {
+        if (getCustomElementState() != CustomElementState::Custom && CustomElement::descriptorMayMatch(*this)) {
+            if (CustomElementsRegistry* registry = CustomElement::registry(*this))
+                registry->addCandidate(this);
+        }
+        if (isUpgradedV0CustomElement())
+            V0CustomElement::didAttach(this, document());
+    }
 
     TreeScope& scope = insertionPoint->treeScope();
     if (scope != treeScope())
         return InsertionDone;
 
     const AtomicString& idValue = getIdAttribute();
     if (!idValue.isNull())
         updateId(scope, nullAtom, idValue);
 
     const AtomicString& nameValue = getNameAttribute();
@@ skipping 2273 matching lines @@
 
 DEFINE_TRACE_WRAPPERS(Element)
 {
     if (hasRareData()) {
         visitor->traceWrappers(elementRareData());
     }
     ContainerNode::traceWrappers(visitor);
 }
 
 } // namespace blink