Oilpan: Ensure that classes with virtual trace methods always have vtables for their left-most base…

Source/core/inspector/InspectorResourceContentLoader.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "core/inspector/InspectorResourceContentLoader.h"
 
 #include "core/FetchInitiatorTypeNames.h"
 #include "core/css/CSSStyleSheet.h"
 #include "core/css/StyleSheetContents.h"
@@ skipping 20 matching lines @@
     }
 
     void waitForResource(Resource* resource)
     {
         if (resource->type() == Resource::Raw)
             resource->addClient(static_cast<RawResourceClient*>(this));
         else
             resource->addClient(static_cast<StyleSheetResourceClient*>(this));
     }
 
+    virtual void trace(Visitor* visitor) OVERRIDE
+    {
+        RawResourceClient::trace(visitor);
+        StyleSheetResourceClient::trace(visitor);
+    }
+
 private:
     InspectorResourceContentLoader* m_loader;
 
     virtual void setCSSStyleSheet(const String&, const KURL&, const String&, const CSSStyleSheetResource*) OVERRIDE;
     virtual void notifyFinished(Resource*) OVERRIDE;
     void resourceFinished(Resource*);
 
     friend class InspectorResourceContentLoader;
 };
 
@@ skipping 133 matching lines @@
         (*it)->handleEvent();
 }
 
 void InspectorResourceContentLoader::resourceFinished(ResourceClient* client)
 {
     m_pendingResourceClients.remove(client);
     checkDone();
 }
 
 } // namespace blink