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

third_party/WebKit/Source/platform/network/EncodedFormData.cpp

 /*
  * Copyright (C) 2004, 2006, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2012 Digia Plc. and/or its subsidiary(-ies)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 90 matching lines @@
         formData->m_elements.uncheckedAppend(
             FormDataElement(e.m_fileSystemURL.copy(), e.m_fileStart,
                             e.m_fileLength, e.m_expectedFileModificationTime));
         break;
     }
   }
   return formData.release();
 }
 
 void EncodedFormData::appendData(const void* data, size_t size) {
-  if (m_elements.isEmpty() || m_elements.last().m_type != FormDataElement::data)
+  if (m_elements.isEmpty() || m_elements.back().m_type != FormDataElement::data)
     m_elements.append(FormDataElement());
-  FormDataElement& e = m_elements.last();
+  FormDataElement& e = m_elements.back();
   size_t oldSize = e.m_data.size();
   e.m_data.grow(oldSize + size);
   memcpy(e.m_data.data() + oldSize, data, size);
 }
 
 void EncodedFormData::appendFile(const String& filename) {
   m_elements.append(FormDataElement(filename, 0, BlobDataItem::toEndOfFile,
                                     invalidFileTime()));
 }
 
@@ skipping 70 matching lines @@
   if (!hasOneRef())
     return false;
   for (auto& element : m_elements) {
     if (!element.isSafeToSendToAnotherThread())
       return false;
   }
   return true;
 }
 
 }  // namespace blink