Cheaper thread-safe atomic initialization of static references.

Source/modules/indexeddb/IDBDatabase.cpp

 /*
  * Copyright (C) 2010 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 89 matching lines @@
 #endif
     visitor->trace(m_databaseCallbacks);
     RefCountedGarbageCollectedEventTargetWithInlineData<IDBDatabase>::trace(visitor);
     ActiveDOMObject::trace(visitor);
 }
 
 int64_t IDBDatabase::nextTransactionId()
 {
     // Only keep a 32-bit counter to allow ports to use the other 32
     // bits of the id.
-    AtomicallyInitializedStatic(int, currentTransactionId = 0);
+    static int currentTransactionId = 0;
     return atomicIncrement(&currentTransactionId);
 }
 
 void IDBDatabase::ackReceivedBlobs(const Vector<String>& uuids)
 {
     if (!m_backend)
         return;
     m_backend->ackReceivedBlobs(uuids);
 }
 
@@ skipping 329 matching lines @@
 {
     return EventTargetNames::IDBDatabase;
 }
 
 ExecutionContext* IDBDatabase::executionContext() const
 {
     return ActiveDOMObject::executionContext();
 }
 
 } // namespace blink