Oilpan: fix build after r351269.

third_party/WebKit/Source/core/inspector/InjectedScriptHost.cpp

 /*
  * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Matt Lilek <webkit@mattlilek.com>
  * 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
@@ skipping 46 matching lines @@
     m_defaultInspectableObject = adoptPtrWillBeNoop(new InspectableObject());
 }
 
 InjectedScriptHost::~InjectedScriptHost()
 {
 }
 
 DEFINE_TRACE(InjectedScriptHost)
 {
     visitor->trace(m_consoleAgent);
-    visitor->trace(m_debuggerAgent);
     visitor->trace(m_inspectedObjects);
     visitor->trace(m_defaultInspectableObject);
 }
 
 void InjectedScriptHost::disconnect()
 {
     m_consoleAgent = nullptr;
     m_debuggerAgent = nullptr;
     m_inspectCallback = nullptr;
     m_debugger = nullptr;
@@ skipping 69 matching lines @@
         m_debuggerAgent->setBreakpoint(scriptId, lineNumber, columnNumber, V8DebuggerAgent::MonitorCommandBreakpointSource, builder.toString());
 }
 
 void InjectedScriptHost::unmonitorFunction(const String& scriptId, int lineNumber, int columnNumber)
 {
     if (m_debuggerAgent)
         m_debuggerAgent->removeBreakpoint(scriptId, lineNumber, columnNumber, V8DebuggerAgent::MonitorCommandBreakpointSource);
 }
 
 } // namespace blink