Fix id/class collection from stylesheets

sky/engine/core/css/RuleFeature.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 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 49 matching lines @@
 void RuleFeatureSet::collectFeaturesFromRuleData(const RuleData& ruleData)
 {
     collectFeaturesFromSelector(ruleData.selector());
 
     if (ruleData.containsAttributeSelector())
         attributeRules.append(RuleFeature(ruleData.rule(), ruleData.selectorIndex()));
 }
 
 void RuleFeatureSet::collectFeaturesFromSelector(const CSSSelector& selector)
 {
-    addSelectorFeatures(selector);
-
-    for (const CSSSelector* current = &selector; current; current = current->tagHistory())
+    for (const CSSSelector* current = &selector; current; current = current->tagHistory()) {
+        addSelectorFeatures(*current);
         collectFeaturesFromSelectorList(current->selectorList());
+   }
 }
 
 void RuleFeatureSet::collectFeaturesFromSelectorList(const CSSSelectorList* selectorList)
 {
     if (!selectorList)
         return;
 
     for (const CSSSelector* selector = selectorList->first(); selector; selector = CSSSelectorList::next(*selector))
         collectFeaturesFromSelector(*selector);
 }
@@ skipping 79 matching lines @@
     }
 }
 
 void RuleFeatureSet::scheduleStyleInvalidationForClassChange(const AtomicString& className, Element& element)
 {
     if (m_classNames.contains(className))
         element.setNeedsStyleRecalc(LocalStyleChange);
 }
 
 } // namespace blink