WTF/std normalization: replace WTF::Vector::first() with ::front()

third_party/WebKit/Source/platform/image-decoders/ico/ICOImageDecoder.cpp

 /*
  * Copyright (c) 2008, 2009, 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 263 matching lines @@
   DEFINE_THREAD_SAFE_STATIC_LOCAL(
       blink::CustomCountHistogram, dimensionsLocationHistogram,
       new blink::CustomCountHistogram(
           "Blink.DecodedImage.EffectiveDimensionsLocation.ICO", 0, 50000, 50));
   dimensionsLocationHistogram.count(m_decodedOffset - 1);
 
   // Arrange frames in decreasing quality order.
   std::sort(m_dirEntries.begin(), m_dirEntries.end(), compareEntries);
 
   // The image size is the size of the largest entry.
-  const IconDirectoryEntry& dirEntry = m_dirEntries.first();
+  const IconDirectoryEntry& dirEntry = m_dirEntries.front();
   // Technically, this next call shouldn't be able to fail, since the width
   // and height here are each <= 256, and |m_frameSize| is empty.
   return setSize(dirEntry.m_size.width(), dirEntry.m_size.height());
 }
 
 ICOImageDecoder::IconDirectoryEntry ICOImageDecoder::readDirectoryEntry() {
   // Read icon data.
   // The following calls to readUint8() return a uint8_t, which is appropriate
   // because that's the on-disk type of the width and height values.  Storing
   // them in ints (instead of matching uint8_ts) is so we can record dimensions
@@ skipping 38 matching lines @@
   SECURITY_DCHECK(index < m_dirEntries.size());
   const uint32_t imageOffset = m_dirEntries[index].m_imageOffset;
   if ((imageOffset > m_data->size()) || ((m_data->size() - imageOffset) < 4))
     return Unknown;
   char buffer[4];
   const char* data = m_fastReader.getConsecutiveData(imageOffset, 4, buffer);
   return strncmp(data, "\x89PNG", 4) ? BMP : PNG;
 }
 
 }  // namespace blink