Made StylePropertySet::getPropertyCSSValue return a const CSSValue*

third_party/WebKit/Source/core/editing/commands/ApplyStyleCommand.cpp

 /*
  * Copyright (C) 2005, 2006, 2008, 2009 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 411 matching lines @@
             element = span;
         }  else {
             // Only handle HTML elements and text nodes.
             continue;
         }
         lastStyledNode = node;
 
         MutableStylePropertySet* inlineStyle = copyStyleOrCreateEmpty(element->inlineStyle());
         float currentFontSize = computedFontSize(node);
         float desiredFontSize = max(MinimumFontSize, startingFontSizes.get(node) + style->fontSizeDelta());
-        CSSValue* value = inlineStyle->getPropertyCSSValue(CSSPropertyFontSize);
+        const CSSValue* value = inlineStyle->getPropertyCSSValue(CSSPropertyFontSize);
         if (value) {
             element->removeInlineStyleProperty(CSSPropertyFontSize);
             currentFontSize = computedFontSize(node);
         }
         if (currentFontSize != desiredFontSize) {
             inlineStyle->setProperty(CSSPropertyFontSize, CSSPrimitiveValue::create(desiredFontSize, CSSPrimitiveValue::UnitType::Pixels), false);
             setNodeAttribute(element, styleAttr, AtomicString(inlineStyle->asText()));
         }
         if (inlineStyle->isEmpty()) {
             removeElementAttribute(element, styleAttr);
@@ skipping 1288 matching lines @@
 DEFINE_TRACE(ApplyStyleCommand)
 {
     visitor->trace(m_style);
     visitor->trace(m_start);
     visitor->trace(m_end);
     visitor->trace(m_styledInlineElement);
     CompositeEditCommand::trace(visitor);
 }
 
 } // namespace blink