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

third_party/WebKit/Source/platform/graphics/GraphicsContext.cpp

 /*
  * Copyright (C) 2003, 2004, 2005, 2006, 2009 Apple Inc. All rights reserved.
  * 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:
  * 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
@@ skipping 57 matching lines @@
       m_disabledState(disableContextOrPainting),
       m_deviceScaleFactor(1.0f),
       m_printing(false),
       m_hasMetaData(!!metaData) {
   if (metaData)
     m_metaData = *metaData;
 
   // FIXME: Do some tests to determine how many states are typically used, and
   // allocate several here.
   m_paintStateStack.append(GraphicsContextState::create());
-  m_paintState = m_paintStateStack.last().get();
+  m_paintState = m_paintStateStack.back().get();
 
   if (contextDisabled()) {
     DEFINE_STATIC_LOCAL(SkCanvas*, nullCanvas, (SkCreateNullCanvas()));
     m_canvas = nullCanvas;
   }
 }
 
 GraphicsContext::~GraphicsContext() {
 #if DCHECK_IS_ON()
   if (!m_disableDestructionChecks) {
@@ skipping 1318 matching lines @@
   static const SkPMColor colors[] = {
       SkPreMultiplyARGB(0x60, 0xFF, 0x00, 0x00),  // More transparent red
       SkPreMultiplyARGB(0x60, 0xC0, 0xC0, 0xC0)   // More transparent gray
   };
 
   return colors[index];
 }
 #endif
 
 }  // namespace blink