Invalidate the "values cache" when resetting animated value state

third_party/WebKit/Source/core/svg/SVGAnimationElement.cpp

 /*
  * Copyright (C) 2004, 2005 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Cameron McCormack <cam@mcc.id.au>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 203 matching lines @@
       attr_name == SVGNames::keySplinesAttr ||
       attr_name == SVGNames::keyPointsAttr ||
       attr_name == SVGNames::keyTimesAttr) {
     AnimationAttributeChanged();
     return;
   }
 
   SVGSMILElement::SvgAttributeChanged(attr_name);
 }
 
+void SVGAnimationElement::InvalidatedValuesCache() {
+  last_values_animation_from_ = String();
+  last_values_animation_to_ = String();
+}
+
 void SVGAnimationElement::AnimationAttributeChanged() {
   // Assumptions may not hold after an attribute change.
   animation_valid_ = false;
-  last_values_animation_from_ = String();
-  last_values_animation_to_ = String();
+  InvalidatedValuesCache();
   SetInactive();
 }
 
 float SVGAnimationElement::getStartTime(ExceptionState& exception_state) const {
   SMILTime start_time = IntervalBegin();
   if (!start_time.IsFinite()) {
     exception_state.ThrowDOMException(kInvalidStateError,
                                       "No current interval.");
     return 0;
   }
@@ skipping 379 matching lines @@
         CalculatePercentForSpline(percent, CalculateKeyTimesIndex(percent));
   else if (animation_mode == kFromToAnimation || animation_mode == kToAnimation)
     effective_percent = CalculatePercentForFromTo(percent);
   else
     effective_percent = percent;
 
   CalculateAnimatedValue(effective_percent, repeat_count, result_element);
 }
 
 }  // namespace blink