Remove unnecesary usage of RefPtr and PassRefPtr of DatabaseContext.

Source/modules/webdatabase/DatabaseSync.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:
  *
  *     * 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 35 matching lines @@
 #include "wtf/RefPtr.h"
 #include "wtf/text/CString.h"
 
 namespace WebCore {
 
 PassRefPtrWillBeRawPtr<DatabaseSync> DatabaseSync::create(ExecutionContext*, PassRefPtrWillBeRawPtr<DatabaseBackendBase> backend)
 {
     return static_cast<DatabaseSync*>(backend.get());
 }
 
-DatabaseSync::DatabaseSync(PassRefPtr<DatabaseContext> databaseContext,
+DatabaseSync::DatabaseSync(DatabaseContext* databaseContext,
     const String& name, const String& expectedVersion, const String& displayName, unsigned long estimatedSize)
-    : DatabaseBackendSync(databaseContext.get(), name, expectedVersion, displayName, estimatedSize)
+    : DatabaseBackendSync(databaseContext, name, expectedVersion, displayName, estimatedSize)
     , DatabaseBase(databaseContext->executionContext())
 {
     ScriptWrappable::init(this);
     setFrontend(this);
 }
 
 DatabaseSync::~DatabaseSync()
 {
     if (executionContext())
         ASSERT(executionContext()->isContextThread());
@@ skipping 133 matching lines @@
 }
 
 #if ENABLE(OILPAN)
 DatabaseSync::TransactionObserver::~TransactionObserver()
 {
     m_transaction.rollbackIfInProgress();
 }
 #endif
 
 } // namespace WebCore