Improve comparison of intervals in SVGSMILElement::resolveFirstInterval

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 914 matching lines @@
 
         beginAfter = tempEnd;
         lastIntervalTempEnd = tempEnd;
     }
     beginResult = SMILTime::unresolved();
     endResult = SMILTime::unresolved();
 }
 
 void SVGSMILElement::resolveFirstInterval()
 {
-    SMILTime begin;
-    SMILTime end;
-    resolveInterval(true, begin, end);
-    ASSERT(!begin.isIndefinite());
+    SMILInterval firstInterval;
+    resolveInterval(true, firstInterval.begin, firstInterval.end);
+    ASSERT(!firstInterval.begin.isIndefinite());
 
-    if (!begin.isUnresolved() && (begin != m_intervalBegin || end != m_intervalEnd)) {
-        m_intervalBegin = begin;
-        m_intervalEnd = end;
+    if (!firstInterval.begin.isUnresolved() && firstInterval != SMILInterval(m_intervalBegin, m_intervalEnd)) {
+        m_intervalBegin = firstInterval.begin;
+        m_intervalEnd = firstInterval.end;
         notifyDependentsIntervalChanged();
         m_nextProgressTime = min(m_nextProgressTime, m_intervalBegin);
 
         if (m_timeContainer)
             m_timeContainer->notifyIntervalsChanged();
     }
 }
 
 bool SVGSMILElement::resolveNextInterval()
 {
@@ skipping 395 matching lines @@
 
 void SVGSMILElement::trace(Visitor* visitor)
 {
     visitor->trace(m_targetElement);
     visitor->trace(m_conditions);
     visitor->trace(m_syncBaseDependents);
     SVGElement::trace(visitor);
 }
 
 }