WTF/std normalization: replace WTF::Vector::last with ::back

third_party/WebKit/Source/core/animation/KeyframeEffectModel.cpp

 /*
  * Copyright (C) 2013 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 125 matching lines @@
       DCHECK_LE(offset, 1);
       DCHECK_GE(offset, lastOffset);
       lastOffset = offset;
     }
     result.append(keyframe->clone());
   }
 
   if (result.isEmpty())
     return result;
 
-  if (isNull(result.last()->offset()))
-    result.last()->setOffset(1);
+  if (isNull(result.back()->offset()))
+    result.back()->setOffset(1);
 
   if (result.size() > 1 && isNull(result[0]->offset()))
     result.first()->setOffset(0);
 
   size_t lastIndex = 0;
   lastOffset = result.first()->offset();
   for (size_t i = 1; i < result.size(); ++i) {
     double offset = result[i]->offset();
     if (!isNull(offset)) {
       for (size_t j = 1; j < i - lastIndex; ++j)
@@ skipping 107 matching lines @@
     double offset,
     PassRefPtr<TimingFunction> easing,
     EffectModel::CompositeOperation composite)
     : m_offset(offset), m_easing(easing), m_composite(composite) {
   DCHECK(!isNull(offset));
 }
 
 void KeyframeEffectModelBase::PropertySpecificKeyframeGroup::appendKeyframe(
     PassRefPtr<Keyframe::PropertySpecificKeyframe> keyframe) {
   DCHECK(m_keyframes.isEmpty() ||
-         m_keyframes.last()->offset() <= keyframe->offset());
+         m_keyframes.back()->offset() <= keyframe->offset());
   m_keyframes.append(keyframe);
 }
 
 void KeyframeEffectModelBase::PropertySpecificKeyframeGroup::
     removeRedundantKeyframes() {
   // As an optimization, removes interior keyframes that have the same offset
   // as both their neighbours, as they will never be used by sample().
   // Note that synthetic keyframes must be added before this method is
   // called.
   DCHECK_GE(m_keyframes.size(), 2U);
@@ skipping 13 matching lines @@
         PassRefPtr<TimingFunction> zeroOffsetEasing) {
   DCHECK(!m_keyframes.isEmpty());
 
   bool addedSyntheticKeyframe = false;
 
   if (m_keyframes.first()->offset() != 0.0) {
     m_keyframes.insert(0, m_keyframes.first()->neutralKeyframe(
                               0, std::move(zeroOffsetEasing)));
     addedSyntheticKeyframe = true;
   }
-  if (m_keyframes.last()->offset() != 1.0) {
-    appendKeyframe(m_keyframes.last()->neutralKeyframe(1, nullptr));
+  if (m_keyframes.back()->offset() != 1.0) {
+    appendKeyframe(m_keyframes.back()->neutralKeyframe(1, nullptr));
     addedSyntheticKeyframe = true;
   }
 
   return addedSyntheticKeyframe;
 }
 
 }  // namespace blink