Migrate WTF::HashMap::get() to ::at()

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 688 matching lines @@
 }
 
 bool HTMLFormElement::reportValidity() {
   return validateInteractively();
 }
 
 Element* HTMLFormElement::elementFromPastNamesMap(
     const AtomicString& pastName) {
   if (pastName.isEmpty() || !m_pastNamesMap)
     return 0;
-  Element* element = m_pastNamesMap->get(pastName);
+  Element* element = m_pastNamesMap->at(pastName);
 #if DCHECK_IS_ON()
   if (!element)
     return 0;
   SECURITY_DCHECK(toHTMLElement(element)->formOwner() == this);
   if (isHTMLImageElement(*element)) {
     SECURITY_DCHECK(imageElements().find(element) != kNotFound);
   } else if (isHTMLObjectElement(*element)) {
     SECURITY_DCHECK(listedElements().find(toHTMLObjectElement(element)) !=
                     kNotFound);
   } else {
@@ skipping 106 matching lines @@
   for (const auto& control : listedElements()) {
     if (!control->isFormControlElement())
       continue;
     if (toHTMLFormControlElement(control)->canBeSuccessfulSubmitButton())
       toHTMLFormControlElement(control)->pseudoStateChanged(
           CSSSelector::PseudoDefault);
   }
 }
 
 }  // namespace blink