Use monotonic time for SVGImage's serviceScriptedAnimations()

Source/core/svg/graphics/SVGImageChromeClient.cpp

 /*
  * Copyright (C) 2012 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
@@ skipping 65 matching lines @@
     // stringent.
     double fireTime = m_image->hasAnimations() ? animationFrameDelay : 0;
     m_animationTimer.startOneShot(fireTime, FROM_HERE);
 }
 
 void SVGImageChromeClient::animationTimerFired(Timer<SVGImageChromeClient>*)
 {
     // In principle, we should call requestAnimationFrame callbacks here, but
     // we know there aren't any because script is forbidden inside SVGImages.
     if (m_image) {
-        m_image->frameView()->page()->animator().serviceScriptedAnimations(currentTime());
+        m_image->frameView()->page()->animator().serviceScriptedAnimations(monotonicallyIncreasingTime());
         m_image->frameView()->updateLayoutAndStyleForPainting();
     }
 }
 
 }