All selectors in :-webkit-any must have an invalidation set feature.

Source/core/css/RuleFeature.cpp

Index: Source/core/css/RuleFeature.cpp
diff --git a/Source/core/css/RuleFeature.cpp b/Source/core/css/RuleFeature.cpp
index 75af986dfdf2af2346bf9c8d28c999733361c3c0..7a4c8190cc00a98988ca4874a17d8479d0a41058 100644
--- a/Source/core/css/RuleFeature.cpp
+++ b/Source/core/css/RuleFeature.cpp
@@ -130,13 +130,16 @@ RuleFeatureSet::InvalidationSetMode RuleFeatureSet::invalidationSetModeForSelect
                 foundIdent = true;
         } else if (component->pseudoType() == CSSSelector::PseudoHost || component->pseudoType() == CSSSelector::PseudoAny) {
             if (const CSSSelectorList* selectorList = component->selectorList()) {
+                bool foundUniversal = false;
                 for (const CSSSelector* selector = selectorList->first(); selector; selector = CSSSelectorList::next(*selector)) {
                     InvalidationSetMode hostMode = invalidationSetModeForSelector(*selector);
                     if (hostMode == UseSubtreeStyleChange)
                         return foundCombinator ? UseLocalStyleChange : UseSubtreeStyleChange;
-                    if (!foundCombinator && hostMode == AddFeatures)
-                        foundIdent = true;
+                    if (hostMode == UseLocalStyleChange || component->pseudoType() == CSSSelector::PseudoNot)

[rune, 2014/07/10 21:49:20]

The PseudoNot check sneaked its way in from another patch. Will remove.

[rune, 2014/07/10 21:50:46]

Done.

+                        foundUniversal = true;
                 }
+                if (!foundUniversal && !foundCombinator)
+                    foundIdent = true;
             }
         } else if (!isSkippableComponentForInvalidation(*component)) {
             return foundCombinator ? UseLocalStyleChange : UseSubtreeStyleChange;