Made StylePropertySet::getPropertyCSSValue return a const CSSValue*

third_party/WebKit/Source/core/css/resolver/StyleResolver.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 779 matching lines @@
             collectFeatures();
 
         ElementRuleCollector collector(state.elementContext(), m_selectorFilter, state.style());
 
         matchAllRules(state, collector, matchingBehavior != MatchAllRulesExcludingSMIL);
 
         // TODO(dominicc): Remove this counter when Issue 590014 is fixed.
         if (element->hasTagName(HTMLNames::summaryTag)) {
             MatchedPropertiesRange properties = collector.matchedResult().authorRules();
             for (auto it = properties.begin(); it != properties.end(); ++it) {
-                CSSValue* value = it->properties->getPropertyCSSValue(CSSPropertyDisplay);
+                const CSSValue* value = it->properties->getPropertyCSSValue(CSSPropertyDisplay);
                 if (value && value->isPrimitiveValue() && toCSSPrimitiveValue(*value).getValueID() == CSSValueBlock)
                     UseCounter::count(element->document(), UseCounter::SummaryElementWithDisplayBlockAuthorRule);
             }
         }
 
         if (element->computedStyle() && element->computedStyle()->textAutosizingMultiplier() != state.style()->textAutosizingMultiplier()) {
             // Preserve the text autosizing multiplier on style recalc. Autosizer will update it during layout if needed.
             // NOTE: this must occur before applyMatchedProperties for correct computation of font-relative lengths.
             state.style()->setTextAutosizingMultiplier(element->computedStyle()->textAutosizingMultiplier());
             state.style()->setUnique();
@@ skipping 935 matching lines @@
     visitor->trace(m_siblingRuleSet);
     visitor->trace(m_uncommonAttributeRuleSet);
     visitor->trace(m_watchedSelectorsRules);
     visitor->trace(m_treeBoundaryCrossingScopes);
     visitor->trace(m_styleSharingLists);
     visitor->trace(m_pendingStyleSheets);
     visitor->trace(m_document);
 }
 
 } // namespace blink