Prepare for multiple !important author ranges.

Source/core/css/ElementRuleCollector.cpp

Index: Source/core/css/ElementRuleCollector.cpp
diff --git a/Source/core/css/ElementRuleCollector.cpp b/Source/core/css/ElementRuleCollector.cpp
index 1168c87613d667ce06de7e77f90bc0cb1ea33929..162a4c2ce8b1d7a160aae793c4b393f4a68c2332 100644
--- a/Source/core/css/ElementRuleCollector.cpp
+++ b/Source/core/css/ElementRuleCollector.cpp
@@ -110,7 +110,7 @@ void ElementRuleCollector::addElementStyleProperties(const StylePropertySet* pro
         return;
     m_result.addMatchedProperties(propertySet);
     if (!isCacheable)
-        m_result.isCacheable = false;
+        m_result.setIsCacheable(false);
 }
 
 static bool rulesApplicableInCurrentTreeScope(const Element* element, const ContainerNode* scopingNode, bool matchingTreeBoundaryRules)
@@ -293,9 +293,6 @@ void ElementRuleCollector::sortAndTransferMatchedRules()
         const RuleData* ruleData = m_matchedRules[i].ruleData();
         m_result.addMatchedProperties(&ruleData->rule()->properties(), ruleData->linkMatchType(), ruleData->propertyWhitelistType(m_matchingUARules));
     }
-
-    if (m_matchingUARules)
-        m_result.uaEnd = m_result.matchedProperties.size();
 }
 
 void ElementRuleCollector::didMatchRule(const RuleData& ruleData, const SelectorChecker::MatchResult& result, CascadeOrder cascadeOrder, const MatchRequest& matchRequest)