Inspector: replace generic discardAgents logic with explicit call to discard a listener.

Source/core/inspector/InspectorController.cpp

 /*
  * Copyright (C) 2011 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 150 matching lines @@
         , domStorageAgent
         , m_domAgent
         , m_debuggerAgent
         , pageScriptDebugServer
     );
 }
 
 InspectorController::~InspectorController()
 {
     m_instrumentingAgents->reset();
-    m_agents.discardAgents();
     ASSERT(!m_inspectorClient);
 }
 
 PassOwnPtr<InspectorController> InspectorController::create(Page* page, InspectorClient* client)
 {
     return adoptPtr(new InspectorController(page, client));
 }
 
 void InspectorController::inspectedPageDestroyed()
 {
@@ skipping 260 matching lines @@
 }
 
 HashMap<String, size_t> InspectorController::processMemoryDistribution() const
 {
     HashMap<String, size_t> memoryInfo;
     m_memoryAgent->getProcessMemoryDistributionMap(&memoryInfo);
     return memoryInfo;
 }
 
 } // namespace WebCore