[SVG] Handle animation freeze when 'repeatDur' is not a multiple of 'dur'

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 983 matching lines @@
     }
     if (!simpleDuration) {
         repeat = 0;
         return 1.f;
     }
     ASSERT(m_intervalBegin.isFinite());
     ASSERT(simpleDuration.isFinite());
     SMILTime activeTime = elapsed - m_intervalBegin;
     SMILTime repeatingDuration = this->repeatingDuration();
     if (elapsed >= m_intervalEnd || activeTime > repeatingDuration) {
-        repeat = static_cast<unsigned>(repeatingDuration.value() / simpleDuration.value()) - 1;
+        repeat = static_cast<unsigned>(repeatingDuration.value() / simpleDuration.value());
+        if (!fmod(repeatingDuration.value(), simpleDuration.value()))
+            repeat--;
 
         double percent = (m_intervalEnd.value() - m_intervalBegin.value()) / simpleDuration.value();
         percent = percent - floor(percent);
         if (percent < numeric_limits<float>::epsilon() || 1 - percent < numeric_limits<float>::epsilon())
             return 1.0f;
         return narrowPrecisionToFloat(percent);
     }
     repeat = static_cast<unsigned>(activeTime.value() / simpleDuration.value());
     SMILTime simpleTime = fmod(activeTime.value(), simpleDuration.value());
     return narrowPrecisionToFloat(simpleTime.value() / simpleDuration.value());
@@ skipping 171 matching lines @@
     addBeginTime(elapsed, elapsed);
 }
 
 void SVGSMILElement::endedActiveInterval()
 {
     clearTimesWithDynamicOrigins(m_beginTimes);
     clearTimesWithDynamicOrigins(m_endTimes);
 }
 
 }