Remove some checks from SharedStyleFinder

Element::supportsStyleSharing() always returns false for elements that
are hovered, focused or active or are the :target so we don't need to
check those in the SharedStyleFinder.

Review URL: https://codereview.chromium.org/221463004

git-svn-id: svn://svn.chromium.org/blink/trunk@170613 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/core/css/resolver/SharedStyleFinder.cpp

@@ -212,16 +212,8 @@ bool SharedStyleFinder::canShareStyleWithElement(Element& candidate) const
         return false;
     if (candidate.isLink() != element().isLink())
         return false;
-    if (candidate.hovered() != element().hovered())
-        return false;
-    if (candidate.active() != element().active())
-        return false;
-    if (candidate.focused() != element().focused())
-        return false;
     if (candidate.shadowPseudoId() != element().shadowPseudoId())
         return false;
-    if (candidate == document().cssTarget())
-        return false;
     if (!sharingCandidateHasIdenticalStyleAffectingAttributes(candidate))
         return false;
     if (candidate.additionalPresentationAttributeStyle() != element().additionalPresentationAttributeStyle())