Oilpan: Prepare to move DatabaseAuthorizer to Oilpan heap.

Source/modules/webdatabase/DatabaseBackendBase.cpp

 /*
  * Copyright (C) 2011 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 230 matching lines @@
     //
     // For DatabaseBackend, we open the SQLite database on the DatabaseThread,
     // and hence we should also close it on that same thread. This means that the
     // SQLite database need to be closed by another mechanism (see
     // DatabaseContext::stopDatabases()). By the time we get here, the SQLite
     // database should have already been closed.
 
     ASSERT(!m_opened);
 }
 
-void DatabaseBackendBase::trace(Visitor*)
+void DatabaseBackendBase::trace(Visitor* visitor)
 {
+    visitor->trace(m_databaseAuthorizer);
 }
 
 void DatabaseBackendBase::closeDatabase()
 {
     if (!m_opened)
         return;
 
     m_sqliteDatabase.close();
     m_opened = false;
     databaseContext()->didCloseDatabase(*this);
@@ skipping 142 matching lines @@
     // If the expected version isn't the empty string, ensure that the current database version we have matches that version. Otherwise, set an exception.
     // If the expected version is the empty string, then we always return with whatever version of the database we have.
     if ((!m_new || shouldSetVersionInNewDatabase) && m_expectedVersion.length() && m_expectedVersion != currentVersion) {
         reportOpenDatabaseResult(6, InvalidStateError, 0);
         errorMessage = "unable to open database, version mismatch, '" + m_expectedVersion + "' does not match the currentVersion of '" + currentVersion + "'";
         m_sqliteDatabase.close();
         return false;
     }
 
     ASSERT(m_databaseAuthorizer);
-    m_sqliteDatabase.setAuthorizer(m_databaseAuthorizer);
+    m_sqliteDatabase.setAuthorizer(m_databaseAuthorizer.get());
 
     databaseContext()->didOpenDatabase(*this);
     // See comment at the top this file regarding calling addOpenDatabase().
     DatabaseTracker::tracker().addOpenDatabase(this);
     m_opened = true;
 
     // Declare success:
     error = DatabaseError::None; // Clear the presumed error from above.
     onExitCaller.setOpenSucceeded();
 
@@ skipping 237 matching lines @@
 {
     executionContext()->addConsoleMessage(StorageMessageSource, ErrorMessageLevel, message);
 }
 
 ExecutionContext* DatabaseBackendBase::executionContext() const
 {
     return databaseContext()->executionContext();
 }
 
 } // namespace WebCore