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

third_party/WebKit/Source/platform/graphics/gpu/DrawingBuffer.cpp

 /*
  * Copyright (c) 2010, 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 212 matching lines @@
   return !m_wantAlphaChannel && rgbEmulation;
 }
 
 std::unique_ptr<cc::SharedBitmap> DrawingBuffer::createOrRecycleBitmap() {
   auto it = std::remove_if(
       m_recycledBitmaps.begin(), m_recycledBitmaps.end(),
       [this](const RecycledBitmap& bitmap) { return bitmap.size != m_size; });
   m_recycledBitmaps.shrink(it - m_recycledBitmaps.begin());
 
   if (!m_recycledBitmaps.isEmpty()) {
-    RecycledBitmap recycled = std::move(m_recycledBitmaps.last());
+    RecycledBitmap recycled = std::move(m_recycledBitmaps.back());
     m_recycledBitmaps.pop_back();
     DCHECK(recycled.size == m_size);
     return std::move(recycled.bitmap);
   }
 
   return Platform::current()->allocateSharedBitmap(m_size);
 }
 
 bool DrawingBuffer::PrepareTextureMailbox(
     cc::TextureMailbox* outMailbox,
@@ skipping 1013 matching lines @@
   if (m_pixelUnpackBufferBindingDirty)
     client->DrawingBufferClientRestorePixelUnpackBufferBinding();
 }
 
 bool DrawingBuffer::shouldUseChromiumImage() {
   return RuntimeEnabledFeatures::webGLImageChromiumEnabled() &&
          m_chromiumImageUsage == AllowChromiumImage;
 }
 
 }  // namespace blink