Track reasons for |Node::SetNeedsStyleRecalc|

Source/core/dom/Node.cpp

Index: Source/core/dom/Node.cpp
diff --git a/Source/core/dom/Node.cpp b/Source/core/dom/Node.cpp
index 4a13e2ca265cf58acb427da12bb93b08fc5d708a..747066f89fa0257440cb3460622f7024a3644df3 100644
--- a/Source/core/dom/Node.cpp
+++ b/Source/core/dom/Node.cpp
@@ -765,7 +765,7 @@ void Node::markAncestorsWithChildNeedsStyleRecalc()
     document().scheduleRenderTreeUpdateIfNeeded();
 }
 
-void Node::setNeedsStyleRecalc(StyleChangeType changeType)
+void Node::setNeedsStyleRecalc(StyleChangeReasonString reason, StyleChangeType changeType)
 {
     ASSERT(changeType != NoStyleChange);
     if (!inActiveDocument())
@@ -2426,7 +2426,7 @@ void Node::setCustomElementState(CustomElementState newState)
     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)