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

third_party/WebKit/Source/platform/graphics/paint/PaintChunker.h

 // Copyright 2015 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.
 
 #ifndef PaintChunker_h
 #define PaintChunker_h
 
 #include "platform/PlatformExport.h"
 #include "platform/graphics/paint/DisplayItem.h"
 #include "platform/graphics/paint/PaintChunk.h"
@@ skipping 28 matching lines @@
 
   // Returns true if a new chunk is created.
   bool incrementDisplayItemIndex(const DisplayItem&);
   // Returns true if the last chunk is removed.
   bool decrementDisplayItemIndex();
 
   PaintChunk& paintChunkAt(size_t i) { return m_chunks[i]; }
   size_t lastChunkIndex() const {
     return m_chunks.isEmpty() ? kNotFound : m_chunks.size() - 1;
   }
-  PaintChunk& lastChunk() { return m_chunks.last(); }
+  PaintChunk& lastChunk() { return m_chunks.back(); }
 
   PaintChunk& findChunkByDisplayItemIndex(size_t index) {
     auto chunk = findChunkInVectorByDisplayItemIndex(m_chunks, index);
     DCHECK(chunk != m_chunks.end());
     return *chunk;
   }
 
   void clear();
 
   // Releases the generated paint chunk list and resets the state of this
@@ skipping 24 matching lines @@
   DisableNullPaintPropertyChecks();
 
  private:
   AutoReset<bool> m_disabler;
 };
 #endif  // DCHECK_IS_ON()
 
 }  // namespace blink
 
 #endif  // PaintChunker_h