Use invalidation sets for :invalid/:valid/:required/:optional.

Source/core/html/HTMLFormElement.cpp

Index: Source/core/html/HTMLFormElement.cpp
diff --git a/Source/core/html/HTMLFormElement.cpp b/Source/core/html/HTMLFormElement.cpp
index 880b9adeb8a9de71c2e87bc0b52c31361df87af0..5e5df71263c78d5f45f263e62ed16e95f39ea3fd 100644
--- a/Source/core/html/HTMLFormElement.cpp
+++ b/Source/core/html/HTMLFormElement.cpp
@@ -728,7 +728,8 @@ void HTMLFormElement::setNeedsValidityCheck()
     // For now unconditionally order style recalculation, which triggers

[dglazkov, 2014/10/24 17:13:25]

Is this comment still valid?

[rune, 2014/10/24 20:12:26]

Yes. With this CL we still recalculate style without checking validity first. We
just do it for fewer elements.

     // validity recalculation. In the near future, implement validity cache and
     // recalculate style only if it changed.
-    setNeedsStyleRecalc(SubtreeStyleChange, StyleChangeReasonForTracing::createWithExtraData(StyleChangeReason::PseudoClass, StyleChangeExtraData::Invalid));
+    pseudoStateChanged(CSSSelector::PseudoValid);
+    pseudoStateChanged(CSSSelector::PseudoInvalid);
 }
 
 bool HTMLFormElement::checkValidity()