Refactor RuleFeatureSet to simplify iteration over CSS Selectors when collecting data.

Source/core/css/resolver/SharedStyleFinder.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. All rights reserved.
@@ skipping 82 matching lines @@
             return false;
     }
 
     return true;
 }
 
 bool SharedStyleFinder::classNamesAffectedByRules(const SpaceSplitString& classNames) const
 {
     unsigned count = classNames.size();
     for (unsigned i = 0; i < count; ++i) {
-        if (m_features.classesInRules.contains(classNames[i]))
+        if (m_features.hasSelectorForClass(classNames[i]))
             return true;
     }
     return false;
 }
 
 static inline const AtomicString& typeAttributeValue(const Element& element)
 {
     // type is animatable in SVG so we need to go down the slow path here.
     return element.isSVGElement() ? element.getAttribute(typeAttr) : element.fastGetAttribute(typeAttr);
 }
@@ skipping 74 matching lines @@
     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())
         return false;
-    if (candidate.hasID() && m_features.idsInRules.contains(candidate.idForStyleResolution()))
+    if (candidate.hasID() && m_features.hasSelectorForId(candidate.idForStyleResolution()))
         return false;
     if (candidate.hasScopedHTMLStyleChild())
         return false;
     if (candidate.shadow() && candidate.shadow()->containsActiveStyles())
         return 0;
 
     bool isControl = candidate.isFormControlElement();
 
     if (isControl != element().isFormControlElement())
         return false;
@@ skipping 13 matching lines @@
 
     if (element().parentElement() != parent) {
         if (!parent->isStyledElement())
             return false;
         if (parent->hasScopedHTMLStyleChild())
             return false;
         if (parent->inlineStyle())
             return false;
         if (parent->isSVGElement() && toSVGElement(parent)->animatedSMILStyleProperties())
             return false;
-        if (parent->hasID() && m_features.idsInRules.contains(parent->idForStyleResolution()))
+        if (parent->hasID() && m_features.hasSelectorForId(parent->idForStyleResolution()))
             return false;
         if (!parent->childrenSupportStyleSharing())
             return false;
     }
 
     return true;
 }
 
 bool SharedStyleFinder::documentContainsValidCandidate() const
 {
@@ skipping 63 matching lines @@
     // Tracking child index requires unique style for each node. This may get set by the sibling rule match above.
     if (!element().parentElement()->childrenSupportStyleSharing()) {
         INCREMENT_STYLE_STATS_COUNTER(m_styleResolver, sharedStyleRejectedByParent);
         return 0;
     }
 
     return shareElement->renderStyle();
 }
 
 }