Replace WTF::emptyString{16Bit}() with a static global

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 541 matching lines @@
       (fastHasAttribute(SVGNames::keyPointsAttr) &&
        fastHasAttribute(SVGNames::keyTimesAttr) &&
        (m_keyTimes.size() < 2 || m_keyTimes.size() != m_keyPoints.size())))
     return;
   if (animationMode == FromToAnimation) {
     m_animationValid = calculateFromAndToValues(from, to);
   } else if (animationMode == ToAnimation) {
     // For to-animations the from value is the current accumulated value from
     // lower priority animations.
     // The value is not static and is determined during the animation.
-    m_animationValid = calculateFromAndToValues(emptyString(), to);
+    m_animationValid = calculateFromAndToValues(emptyString, to);
   } else if (animationMode == FromByAnimation) {
     m_animationValid = calculateFromAndByValues(from, by);
   } else if (animationMode == ByAnimation) {
-    m_animationValid = calculateFromAndByValues(emptyString(), by);
+    m_animationValid = calculateFromAndByValues(emptyString, by);
   } else if (animationMode == ValuesAnimation) {
     m_animationValid =
         m_values.size() >= 1 && (calcMode == CalcModePaced ||
                                  !fastHasAttribute(SVGNames::keyTimesAttr) ||
                                  fastHasAttribute(SVGNames::keyPointsAttr) ||
                                  (m_values.size() == m_keyTimes.size())) &&
         (calcMode == CalcModeDiscrete || !m_keyTimes.size() ||
          m_keyTimes.back() == 1) &&
         (calcMode != CalcModeSpline ||
          ((m_keySplines.size() &&
@@ skipping 44 matching lines @@
         calculatePercentForSpline(percent, calculateKeyTimesIndex(percent));
   else if (animationMode == FromToAnimation || animationMode == ToAnimation)
     effectivePercent = calculatePercentForFromTo(percent);
   else
     effectivePercent = percent;
 
   calculateAnimatedValue(effectivePercent, repeatCount, resultElement);
 }
 
 }  // namespace blink