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

third_party/WebKit/Source/core/dom/Range.cpp

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * (C) 2000 Gunnstein Lye (gunnstein@netcom.no)
  * (C) 2000 Frederik Holljen (frederik.holljen@hig.no)
  * (C) 2001 Peter Kelly (pmk@post.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All
  * rights reserved.
  * Copyright (C) 2011 Motorola Mobility. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 1668 matching lines @@
 
   Vector<FloatQuad> quads;
   getBorderAndTextQuads(quads);
 
   FloatRect result;
   for (const FloatQuad& quad : quads)
     result.unite(quad.boundingBox());  // Skips empty rects.
 
   // If all rects are empty, return the first rect.
   if (result.isEmpty() && !quads.isEmpty())
-    return quads.first().boundingBox();
+    return quads.front().boundingBox();
 
   return result;
 }
 
 DEFINE_TRACE(Range) {
   visitor->trace(m_ownerDocument);
   visitor->trace(m_start);
   visitor->trace(m_end);
 }
 
@@ skipping 11 matching lines @@
                      .data()
               << "start offset: " << range->startOffset()
               << ", end offset: " << range->endOffset();
   } else {
     LOG(INFO) << "Cannot show tree if range is null, or if boundary points are "
                  "invalid.";
   }
 }
 
 #endif