Update :link/:visited style when changing href.

Source/core/html/HTMLAnchorElement.cpp

Index: Source/core/html/HTMLAnchorElement.cpp
diff --git a/Source/core/html/HTMLAnchorElement.cpp b/Source/core/html/HTMLAnchorElement.cpp
index fcd81d8c01a7dea5f2b9818188e643d2a231607d..8705c2e196c4518a47b9cdbf2c46c74e01e83971 100644
--- a/Source/core/html/HTMLAnchorElement.cpp
+++ b/Source/core/html/HTMLAnchorElement.cpp
@@ -196,13 +196,16 @@ void HTMLAnchorElement::parseAttribute(const QualifiedName& name, const AtomicSt
     if (name == hrefAttr) {
         bool wasLink = isLink();
         setIsLink(!value.isNull());
-        if (wasLink != isLink()) {
-            didAffectSelector(AffectedSelectorLink | AffectedSelectorVisited | AffectedSelectorEnabled);
-            if (wasLink && treeScope().adjustedFocusedElement() == this) {
-                // We might want to call blur(), but it's dangerous to dispatch
-                // events here.
-                document().setNeedsFocusedElementCheck();
-            }
+        if (wasLink || isLink()) {
+            AffectedSelectorMask affectedPseudo = AffectedSelectorLink | AffectedSelectorVisited;
+            if (wasLink != isLink())
+                affectedPseudo |= AffectedSelectorEnabled;
+            didAffectSelector(affectedPseudo);
+        }
+        if (wasLink && !isLink() && treeScope().adjustedFocusedElement() == this) {
+            // We might want to call blur(), but it's dangerous to dispatch
+            // events here.
+            document().setNeedsFocusedElementCheck();
         }
         if (isLink()) {
             String parsedURL = stripLeadingAndTrailingHTMLSpaces(value);