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

third_party/WebKit/Source/core/html/HTMLFormElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights
  * reserved.
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 722 matching lines @@
   }
 }
 
 void HTMLFormElement::getNamedElements(
     const AtomicString& name,
     HeapVector<Member<Element>>& namedItems) {
   // http://www.whatwg.org/specs/web-apps/current-work/multipage/forms.html#dom-form-nameditem
   elements()->namedItems(name, namedItems);
 
   Element* elementFromPast = elementFromPastNamesMap(name);
-  if (namedItems.size() && namedItems.first() != elementFromPast) {
-    addToPastNamesMap(namedItems.first().get(), name);
+  if (namedItems.size() && namedItems.front() != elementFromPast) {
+    addToPastNamesMap(namedItems.front().get(), name);
   } else if (elementFromPast && namedItems.isEmpty()) {
     namedItems.append(elementFromPast);
     UseCounter::count(document(), UseCounter::FormNameAccessForPastNamesMap);
   }
 }
 
 bool HTMLFormElement::shouldAutocomplete() const {
   return !equalIgnoringCase(fastGetAttribute(autocompleteAttr), "off");
 }
 
@@ skipping 22 matching lines @@
       return;
   }
 
   // Second call may return different results from the first call,
   // but if the first the size cannot be zero.
   HeapVector<Member<Element>> elements;
   getNamedElements(name, elements);
   DCHECK(!elements.isEmpty());
 
   bool onlyMatchImg =
-      !elements.isEmpty() && isHTMLImageElement(*elements.first());
+      !elements.isEmpty() && isHTMLImageElement(*elements.front());
   if (onlyMatchImg) {
     UseCounter::count(document(), UseCounter::FormNameAccessForImageElement);
     // The following code has performance impact, but it should be small
     // because <img> access via <form> name getter is rarely used.
     for (auto& element : elements) {
       if (isHTMLImageElement(*element) && !element->isDescendantOf(this)) {
         UseCounter::count(
             document(), UseCounter::FormNameAccessForNonDescendantImageElement);
         break;
       }
@@ skipping 17 matching lines @@
   for (const auto& control : associatedElements()) {
     if (!control->isFormControlElement())
       continue;
     if (toHTMLFormControlElement(control)->canBeSuccessfulSubmitButton())
       toHTMLFormControlElement(control)->pseudoStateChanged(
           CSSSelector::PseudoDefault);
   }
 }
 
 }  // namespace blink