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

third_party/WebKit/Source/platform/SharedBuffer.cpp

 /*
  * Copyright (C) 2006, 2008 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2009-2010. 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 91 matching lines @@
     // No need to use segments for small resource data.
     m_buffer.append(data, length);
     return;
   }
 
   char* segment;
   if (!positionInSegment) {
     segment = allocateSegment();
     m_segments.append(segment);
   } else
-    segment = m_segments.last() + positionInSegment;
+    segment = m_segments.back() + positionInSegment;
 
   size_t segmentFreeSpace = kSegmentSize - positionInSegment;
   size_t bytesToCopy = std::min(length, segmentFreeSpace);
 
   for (;;) {
     memcpy(segment, data, bytesToCopy);
     if (length == bytesToCopy)
       break;
 
     length -= bytesToCopy;
@@ skipping 137 matching lines @@
     // using fastMalloc.
     const String dataDumpName = dumpPrefix + "/segments";
     auto dump = memoryDump->createMemoryAllocatorDump(dataDumpName);
     dump->addScalar("size", "bytes", m_size);
     memoryDump->addSuballocation(
         dump->guid(), String(WTF::Partitions::kAllocatedObjectPoolName));
   }
 }
 
 }  // namespace blink