Revalidate SMIL animation value after target change

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 597 matching lines @@
   if (m_targetElement)
     disconnectSyncBaseConditions();
 
   // If the animation state is not Inactive, always reset to a clear state
   // before leaving the old target element.
   if (m_activeState != Inactive)
     endedActiveInterval();
 
   m_targetElement = target;
   didChangeAnimationTarget();
+
+  // If the animation is scheduled and there's an active interval, then
+  // revalidate the animation value.
+  if (m_activeState != Inactive && m_isScheduled)
+    startedActiveInterval();
 }
 
 SMILTime SVGSMILElement::elapsed() const {
   return m_timeContainer ? m_timeContainer->elapsed() : 0;
 }
 
 bool SVGSMILElement::isFrozen() const {
   return m_activeState == Frozen;
 }
 
@@ skipping 639 matching lines @@
   visitor->trace(m_targetElement);
   visitor->trace(m_targetIdObserver);
   visitor->trace(m_timeContainer);
   visitor->trace(m_conditions);
   visitor->trace(m_syncBaseDependents);
   SVGElement::trace(visitor);
   SVGTests::trace(visitor);
 }
 
 }  // namespace blink