Oilpan: Prepare moving InspectorController and InspectorAgents to oilpan.

Source/modules/webdatabase/InspectorDatabaseAgent.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 295 matching lines @@
 }
 
 Database* InspectorDatabaseAgent::databaseForId(const String& databaseId)
 {
     DatabaseResourcesHeapMap::iterator it = m_resources.find(databaseId);
     if (it == m_resources.end())
         return 0;
     return it->value->database();
 }
 
+void InspectorDatabaseAgent::trace(Visitor* visitor)
+{
+    visitor->trace(m_resources);
+    InspectorBaseAgent::trace(visitor);
+}
+
 } // namespace WebCore