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

third_party/WebKit/Source/core/dom/custom/V0CustomElementRegistry.cpp

 /*
  * Copyright (C) 2012 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:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 96 matching lines @@
         V0CustomElementException::ContextDestroyedRegisteringDefinition, type,
         exceptionState);
     return 0;
   }
 
   return definition;
 }
 
 V0CustomElementDefinition* V0CustomElementRegistry::find(
     const V0CustomElementDescriptor& descriptor) const {
-  return m_definitions.get(descriptor);
+  return m_definitions.at(descriptor);
 }
 
 bool V0CustomElementRegistry::nameIsDefined(const AtomicString& name) const {
   return m_registeredTypeNames.contains(name);
 }
 
 void V0CustomElementRegistry::setV1(const CustomElementRegistry* v1) {
   DCHECK(!m_v1.get());
   m_v1 = v1;
 }
 
 bool V0CustomElementRegistry::v1NameIsDefined(const AtomicString& name) const {
   return m_v1.get() && m_v1->nameIsDefined(name);
 }
 
 DEFINE_TRACE(V0CustomElementRegistry) {
   visitor->trace(m_definitions);
   visitor->trace(m_v1);
 }
 
 }  // namespace blink