Migrate WTF::Vector::append() to ::push_back() [part 2 of N]

third_party/WebKit/Source/core/animation/css/CSSTransitionData.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/animation/css/CSSTransitionData.h"
 
 #include "core/animation/Timing.h"
 
 namespace blink {
 
 CSSTransitionData::CSSTransitionData() {
-  m_propertyList.append(initialProperty());
+  m_propertyList.push_back(initialProperty());
 }
 
 CSSTransitionData::CSSTransitionData(const CSSTransitionData& other)
     : CSSTimingData(other), m_propertyList(other.m_propertyList) {}
 
 bool CSSTransitionData::transitionsMatchForStyleRecalc(
     const CSSTransitionData& other) const {
   return m_propertyList == other.m_propertyList;
 }
 
 Timing CSSTransitionData::convertToTiming(size_t index) const {
   DCHECK_LT(index, m_propertyList.size());
   // Note that the backwards fill part is required for delay to work.
   Timing timing = CSSTimingData::convertToTiming(index);
   timing.fillMode = Timing::FillMode::NONE;
   return timing;
 }
 
 }  // namespace blink