Introduce Element::AttributeModificationParams

third_party/WebKit/Source/core/svg/animation/SVGSMILElement.cpp

 /*
  * Copyright (C) 2008 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 427 matching lines @@
     SMILTime value = parseClockValue(splitString[n]);
     if (value.isUnresolved())
       parseCondition(splitString[n], beginOrEnd);
     else if (!existing.contains(value.value()))
       timeList.push_back(
           SMILTimeWithOrigin(value, SMILTimeWithOrigin::ParserOrigin));
   }
   sortTimeList(timeList);
 }
 
-void SVGSMILElement::parseAttribute(const QualifiedName& name,
-                                    const AtomicString& oldValue,
-                                    const AtomicString& value) {
+void SVGSMILElement::parseAttribute(const AttributeModificationParams& params) {
+  const QualifiedName& name = params.name;
+  const AtomicString& value = params.newValue;
   if (name == SVGNames::beginAttr) {
     if (!m_conditions.isEmpty()) {
       clearConditions();
       parseBeginOrEnd(fastGetAttribute(SVGNames::endAttr), End);
     }
     parseBeginOrEnd(value.getString(), Begin);
     if (isConnected())
       connectSyncBaseConditions();
   } else if (name == SVGNames::endAttr) {
     if (!m_conditions.isEmpty()) {
       clearConditions();
       parseBeginOrEnd(fastGetAttribute(SVGNames::beginAttr), Begin);
     }
     parseBeginOrEnd(value.getString(), End);
     if (isConnected())
       connectSyncBaseConditions();
   } else if (name == SVGNames::onbeginAttr) {
     setAttributeEventListener(
         EventTypeNames::beginEvent,
         createAttributeEventListener(this, name, value, eventParameterName()));
   } else if (name == SVGNames::onendAttr) {
     setAttributeEventListener(
         EventTypeNames::endEvent,
         createAttributeEventListener(this, name, value, eventParameterName()));
   } else if (name == SVGNames::onrepeatAttr) {
     setAttributeEventListener(
         EventTypeNames::repeatEvent,
         createAttributeEventListener(this, name, value, eventParameterName()));
   } else {
-    SVGElement::parseAttribute(name, oldValue, value);
+    SVGElement::parseAttribute(params);
   }
 }
 
 void SVGSMILElement::svgAttributeChanged(const QualifiedName& attrName) {
   if (attrName == SVGNames::durAttr) {
     m_cachedDur = invalidCachedTime;
   } else if (attrName == SVGNames::repeatDurAttr) {
     m_cachedRepeatDur = invalidCachedTime;
   } else if (attrName == SVGNames::repeatCountAttr) {
     m_cachedRepeatCount = invalidCachedTime;
@@ skipping 818 matching lines @@
 DEFINE_TRACE(SVGSMILElement) {
   visitor->trace(m_targetElement);
   visitor->trace(m_timeContainer);
   visitor->trace(m_conditions);
   visitor->trace(m_syncBaseDependents);
   SVGElement::trace(visitor);
   SVGTests::trace(visitor);
 }
 
 }  // namespace blink