Track reasons for |Node::SetNeedsStyleRecalc|

Source/core/dom/Node.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 747 matching lines @@
     m_nodeFlags = (m_nodeFlags & ~StyleChangeMask) | changeType;
 }
 
 void Node::markAncestorsWithChildNeedsStyleRecalc()
 {
     for (ContainerNode* p = parentOrShadowHostNode(); p && !p->childNeedsStyleRecalc(); p = p->parentOrShadowHostNode())
         p->setChildNeedsStyleRecalc();
     document().scheduleRenderTreeUpdateIfNeeded();
 }
 
-void Node::setNeedsStyleRecalc(StyleChangeType changeType)
+void Node::setNeedsStyleRecalc(StyleChangeReasonString reason, StyleChangeType changeType)
 {
     ASSERT(changeType != NoStyleChange);
     if (!inActiveDocument())
         return;
 
     StyleChangeType existingChangeType = styleChangeType();
     if (changeType > existingChangeType) {
         setStyleChange(changeType);
         if (changeType >= SubtreeStyleChange)
             traceStyleChangeIfNeeded(changeType);
@@ skipping 1640 matching lines @@
     case Upgraded:
         ASSERT(WaitingForUpgrade == oldState);
         break;
     }
 
     ASSERT(isHTMLElement() || isSVGElement());
     setFlag(CustomElementFlag);
     setFlag(newState == Upgraded, CustomElementUpgradedFlag);
 
     if (oldState == NotCustomElement || newState == Upgraded)
-        setNeedsStyleRecalc(SubtreeStyleChange); // :unresolved has changed
+        setNeedsStyleRecalc(StyleChangeReasonForTracing::CustomElement, SubtreeStyleChange); // :unresolved has changed

[esprehn, 2014/09/19 04:53:09]

UnresolvedPseudoClass ? Seems like it should be consistent with focus, hover
etc.

[kouhei (in TOK), 2014/09/22 09:03:54]

Done.

 }
 
 void Node::trace(Visitor* visitor)
 {
 #if ENABLE(OILPAN)
     visitor->trace(m_parentOrShadowHostNode);
     visitor->trace(m_previous);
     visitor->trace(m_next);
     // rareData() and m_data.m_renderer share their storage. We have to trace
     // only one of them.
@@ skipping 65 matching lines @@
         node->showTreeForThis();
 }
 
 void showNodePath(const blink::Node* node)
 {
     if (node)
         node->showNodePathForThis();
 }
 
 #endif