Migrate WTF::HashSet::add() to ::insert() [part 1 of N]

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

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 39 matching lines @@
 void SQLTransactionCoordinator::processPendingTransactions(
     CoordinationInfo& info) {
   if (info.activeWriteTransaction || info.pendingTransactions.isEmpty())
     return;
 
   SQLTransactionBackend* firstPendingTransaction =
       info.pendingTransactions.first();
   if (firstPendingTransaction->isReadOnly()) {
     do {
       firstPendingTransaction = info.pendingTransactions.takeFirst();
-      info.activeReadTransactions.add(firstPendingTransaction);
+      info.activeReadTransactions.insert(firstPendingTransaction);
       firstPendingTransaction->lockAcquired();
     } while (!info.pendingTransactions.isEmpty() &&
              info.pendingTransactions.first()->isReadOnly());
   } else if (info.activeReadTransactions.isEmpty()) {
     info.pendingTransactions.removeFirst();
     info.activeWriteTransaction = firstPendingTransaction;
     firstPendingTransaction->lockAcquired();
   }
 }
 
@@ skipping 71 matching lines @@
       SQLTransactionBackend* transaction = info.pendingTransactions.takeFirst();
       transaction->notifyDatabaseThreadIsShuttingDown();
     }
   }
 
   // Clean up all pending transactions for all databases
   m_coordinationInfoMap.clear();
 }
 
 }  // namespace blink