Web SQL: Make sure DatabaseManager is used only in the main thread.

Source/web/WebDatabase.cpp

 /*
  * Copyright (C) 2009 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 14 matching lines @@
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "public/web/WebDatabase.h"
 
 #include "modules/webdatabase/DatabaseBackendBase.h"
-#include "modules/webdatabase/DatabaseManager.h"
+#include "modules/webdatabase/DatabaseTracker.h"
 #include "modules/webdatabase/QuotaTracker.h"
 #include "platform/weborigin/SecurityOrigin.h"
 #include "public/platform/WebString.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefPtr.h"
 
 namespace blink {
 
 WebString WebDatabase::name() const
 {
@@ skipping 34 matching lines @@
     QuotaTracker::instance().updateSpaceAvailableToOrigin(originIdentifier, spaceAvailable);
 }
 
 void WebDatabase::resetSpaceAvailable(const WebString& originIdentifier)
 {
     QuotaTracker::instance().resetSpaceAvailableToOrigin(originIdentifier);
 }
 
 void WebDatabase::closeDatabaseImmediately(const WebString& originIdentifier, const WebString& databaseName)
 {
-    DatabaseManager::manager().closeDatabasesImmediately(originIdentifier, databaseName);
+    DatabaseTracker::tracker().closeDatabasesImmediately(originIdentifier, databaseName);
 }
 
 WebDatabase::WebDatabase(const DatabaseBackendBase* database)
     : m_database(database)
 {
 }
 
 } // namespace blink