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

third_party/WebKit/Source/modules/webdatabase/Database.cpp

 /*
  * Copyright (C) 2013 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:
  * 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 183 matching lines @@
 
 static DatabaseGuid guidForOriginAndName(const String& origin,
                                          const String& name) {
   // Ensure the the mutex is locked.
   ASSERT(guidMutex().locked());
 
   String stringID = origin + "/" + name;
 
   typedef HashMap<String, int> IDGuidMap;
   DEFINE_STATIC_LOCAL_WITH_LOCK(IDGuidMap, stringIdentifierToGUIDMap, ());
-  DatabaseGuid guid = stringIdentifierToGUIDMap.get(stringID);
+  DatabaseGuid guid = stringIdentifierToGUIDMap.at(stringID);
   if (!guid) {
     static int currentNewGUID = 1;
     guid = currentNewGUID++;
     stringIdentifierToGUIDMap.set(stringID, guid);
   }
 
   return guid;
 }
 
 Database::Database(DatabaseContext* databaseContext,
@@ skipping 447 matching lines @@
 
   return result;
 }
 
 void Database::setExpectedVersion(const String& version) {
   m_expectedVersion = version.isolatedCopy();
 }
 
 String Database::getCachedVersion() const {
   MutexLocker locker(guidMutex());
-  return guidToVersionMap().get(m_guid).isolatedCopy();
+  return guidToVersionMap().at(m_guid).isolatedCopy();
 }
 
 void Database::setCachedVersion(const String& actualVersion) {
   // Update the in memory database version map.
   MutexLocker locker(guidMutex());
   updateGuidVersionMap(m_guid, actualVersion);
 }
 
 bool Database::getActualVersionForTransaction(String& actualVersion) {
   ASSERT(m_sqliteDatabase.transactionInProgress());
@@ skipping 262 matching lines @@
   if (getDatabaseContext()->databaseThread()->isDatabaseThread())
     return m_databaseThreadSecurityOrigin.get();
   return nullptr;
 }
 
 bool Database::opened() {
   return static_cast<bool>(acquireLoad(&m_opened));
 }
 
 }  // namespace blink