No subtree recalc for scrollbar pseudo classes.

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 28ec6d82de9d82ee3d3984fb8cdb193a54e15189..2e7bceb023b0905bd5ef3370650ce2f6df02e402 100644
--- a/Source/core/css/RuleFeature.cpp
+++ b/Source/core/css/RuleFeature.cpp
@@ -122,6 +122,16 @@ static bool supportsInvalidation(CSSSelector::PseudoType type)
     case CSSSelector::PseudoScrollbarTrackPiece:
     case CSSSelector::PseudoWindowInactive:
     case CSSSelector::PseudoSelection:
+    case CSSSelector::PseudoCornerPresent:
+    case CSSSelector::PseudoDecrement:
+    case CSSSelector::PseudoIncrement:
+    case CSSSelector::PseudoHorizontal:
+    case CSSSelector::PseudoVertical:
+    case CSSSelector::PseudoStart:
+    case CSSSelector::PseudoEnd:
+    case CSSSelector::PseudoDoubleButton:
+    case CSSSelector::PseudoSingleButton:
+    case CSSSelector::PseudoNoButton:
     case CSSSelector::PseudoFullScreen:
     case CSSSelector::PseudoFullScreenDocument:
     case CSSSelector::PseudoFullScreenAncestor:
@@ -161,16 +171,6 @@ static bool requiresSubtreeInvalidation(const CSSSelector& selector)
     switch (selector.pseudoType()) {
     case CSSSelector::PseudoFirstLine:
     case CSSSelector::PseudoFirstLetter:
-    case CSSSelector::PseudoCornerPresent:
-    case CSSSelector::PseudoDecrement:
-    case CSSSelector::PseudoIncrement:
-    case CSSSelector::PseudoHorizontal:
-    case CSSSelector::PseudoVertical:
-    case CSSSelector::PseudoStart:
-    case CSSSelector::PseudoEnd:
-    case CSSSelector::PseudoDoubleButton:
-    case CSSSelector::PseudoSingleButton:
-    case CSSSelector::PseudoNoButton:
     case CSSSelector::PseudoCue:
     case CSSSelector::PseudoFutureCue:
     case CSSSelector::PseudoPastCue: