Revert of Change ComputedStyle::setUnique to take bool parameter.

third_party/WebKit/Source/core/css/ElementRuleCollector.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/)
@@ skipping 322 matching lines @@
       return;
     // FIXME: Matching should not modify the style directly.
     if (!m_style || dynamicPseudo >= FirstInternalPseudoId)
       return;
     if ((dynamicPseudo == PseudoIdBefore || dynamicPseudo == PseudoIdAfter) &&
         !ruleData.rule()->properties().hasProperty(CSSPropertyContent))
       return;
     m_style->setHasPseudoStyle(dynamicPseudo);
   } else {
     if (m_style && ruleData.containsUncommonAttributeSelector())
-      m_style->setUnique(true);
+      m_style->setUnique();
 
     m_matchedRules.push_back(
         MatchedRule(&ruleData, result.specificity, cascadeOrder,
                     matchRequest.styleSheetIndex, matchRequest.styleSheet));
   }
 }
 
 static inline bool compareRules(const MatchedRule& matchedRule1,
                                 const MatchedRule& matchedRule2) {
   unsigned specificity1 = matchedRule1.specificity();
@@ skipping 22 matching lines @@
   return !m_matchedRules.isEmpty();
 }
 
 void ElementRuleCollector::addMatchedRulesToTracker(
     StyleRuleUsageTracker* tracker) const {
   for (auto matchedRule : m_matchedRules)
     tracker->track(matchedRule.ruleData()->rule());
 }
 
 }  // namespace blink