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

third_party/WebKit/Source/platform/geometry/Region.cpp

 /*
  * Copyright (C) 2010, 2011 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 229 matching lines @@
 
 void Region::Shape::appendSpan(int y) {
   m_spans.append(Span(y, m_segments.size()));
 }
 
 bool Region::Shape::canCoalesce(SegmentIterator begin, SegmentIterator end) {
   if (m_spans.isEmpty())
     return false;
 
   SegmentIterator lastSpanBegin =
-      m_segments.data() + m_spans.last().segmentIndex;
+      m_segments.data() + m_spans.back().segmentIndex;
   SegmentIterator lastSpanEnd = m_segments.data() + m_segments.size();
 
   // Check if both spans have an equal number of segments.
   if (lastSpanEnd - lastSpanBegin != end - begin)
     return false;
 
   // Check if both spans are equal.
   if (!std::equal(begin, end, lastSpanBegin))
     return false;
 
@@ skipping 357 matching lines @@
   m_shape.swap(subtractedShape);
   m_bounds = m_shape.bounds();
 }
 
 void Region::translate(const IntSize& offset) {
   m_bounds.move(offset);
   m_shape.translate(offset);
 }
 
 }  // namespace blink