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

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

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple 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.
@@ skipping 103 matching lines @@
     entry->orderedList.clear();
   }
 }
 
 template <bool keyMatches(const AtomicString&, const Element&)>
 inline Element* DocumentOrderedMap::get(const AtomicString& key,
                                         const TreeScope* scope) const {
   DCHECK(key);
   DCHECK(scope);
 
-  MapEntry* entry = m_map.get(key);
+  MapEntry* entry = m_map.at(key);
   if (!entry)
     return 0;
 
   DCHECK(entry->count);
   if (entry->element)
     return entry->element;
 
   // Iterate to find the node that matches. Nothing will match iff an element
   // with children having duplicate IDs is being removed -- the tree traversal
   // will be over an updated tree not having that subtree. In all other cases,
@@ skipping 70 matching lines @@
 DEFINE_TRACE(DocumentOrderedMap) {
   visitor->trace(m_map);
 }
 
 DEFINE_TRACE(DocumentOrderedMap::MapEntry) {
   visitor->trace(element);
   visitor->trace(orderedList);
 }
 
 }  // namespace blink