Implement Web Worker access to the SQL database.

WebCore/workers/WorkerContext.idl

 /*
  * Copyright (C) 2008 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 31 matching lines @@
 #if defined(LANGUAGE_JAVASCRIPT) && LANGUAGE_JAVASCRIPT
                  attribute [Replaceable] WorkerContext self;
 #endif
                  attribute [Replaceable] WorkerLocation location;
         void close();
                  attribute EventListener onerror;
 
         // WorkerUtils
         [Custom] void importScripts(/*[Variadic] in DOMString urls */);
                  attribute [Replaceable] WorkerNavigator navigator;
-        // Database openDatabase(in DOMString name, in DOMString version, in DOMString displayName, in unsigned long estimatedSize);
+#if defined(ENABLE_DATABASE) && ENABLE_DATABASE
+        [EnabledAtRuntime] Database openDatabase(in DOMString name, in DOMString version, in DOMString displayName, in unsigned long estimatedSize)
+            raises(DOMException);
+#endif
         // DatabaseSync openDatabaseSync(in DOMString name, in DOMString version, in DOMString displayName, in unsigned long estimatedSize);
 
         // Timers
         [Custom] long setTimeout(in TimeoutHandler handler, in long timeout);
         // [Custom] long setTimeout(in DOMString code, in long timeout);
         void clearTimeout(in long handle);
         [Custom] long setInterval(in TimeoutHandler handler, in long timeout);
         // [Custom] long setInterval(in DOMString code, in long timeout);
         void clearInterval(in long handle);
 
@@ skipping 23 matching lines @@
 #if ENABLE_EVENTSOURCE
         attribute [JSCCustomGetter] EventSourceConstructor EventSource;
 #endif
         attribute [JSCCustomGetter] XMLHttpRequestConstructor XMLHttpRequest;
 #if defined(ENABLE_WEB_SOCKETS) && ENABLE_WEB_SOCKETS
         attribute [JSCCustomGetter,EnabledAtRuntime] WebSocketConstructor WebSocket; // Usable with the new operator
 #endif
     };
 
 }