Oilpan: fix build after r351269.

third_party/WebKit/Source/core/inspector/InspectorConsoleAgent.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:
  * 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
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 45 matching lines @@
 InspectorConsoleAgent::~InspectorConsoleAgent()
 {
 #if !ENABLE(OILPAN)
     m_instrumentingAgents->setInspectorConsoleAgent(0);
 #endif
 }
 
 DEFINE_TRACE(InspectorConsoleAgent)
 {
     visitor->trace(m_injectedScriptManager);
-    visitor->trace(m_debuggerAgent);
     InspectorBaseAgent::trace(visitor);
 }
 
 void InspectorConsoleAgent::enable(ErrorString*)
 {
     if (m_enabled)
         return;
     m_instrumentingAgents->setInspectorConsoleAgent(this);
     m_enabled = true;
     enableStackCapturingIfNeeded();
@@ skipping 157 matching lines @@
     }
     if (consoleMessage->messageId())
         jsonObj->setMessageId(consoleMessage->messageId());
     if (consoleMessage->relatedMessageId())
         jsonObj->setRelatedMessageId(consoleMessage->relatedMessageId());
     frontend()->messageAdded(jsonObj);
     frontend()->flush();
 }
 
 } // namespace blink