Multiple :hover/:active incorrectly matching in quirks mode.

third_party/WebKit/Source/core/css/SelectorChecker.cpp

Index: third_party/WebKit/Source/core/css/SelectorChecker.cpp
diff --git a/third_party/WebKit/Source/core/css/SelectorChecker.cpp b/third_party/WebKit/Source/core/css/SelectorChecker.cpp
index 3416c2386789fce0db221a12c9e35cd4d44c2431..16d0217a6c9ce1bcf5f44fbccb1ffec15bdd49b2 100644
--- a/third_party/WebKit/Source/core/css/SelectorChecker.cpp
+++ b/third_party/WebKit/Source/core/css/SelectorChecker.cpp
@@ -155,9 +155,17 @@ static bool shouldMatchHoverOrActive(const SelectorChecker::SelectorCheckingCont
         return true;
     if (context.isSubSelector)
         return true;
-    if (context.selector->relation() == CSSSelector::SubSelector && context.selector->tagHistory())
+    if (context.element->isLink())
         return true;
-    return context.element->isLink();
+    const CSSSelector* selector = context.selector;
+    while (selector->relation() == CSSSelector::SubSelector && selector->tagHistory()) {
+        selector = selector->tagHistory();
+        if (selector->match() != CSSSelector::PseudoClass)
+            return true;
+        if (selector->getPseudoType() != CSSSelector::PseudoHover && selector->getPseudoType() != CSSSelector::PseudoActive)
+            return true;
+    }
+    return false;
 }
 
 static bool isFirstChild(Element& element)