Oilpan: Prepare moving InspectorController and InspectorAgents to oilpan.

Source/core/inspector/InspectorTimelineAgent.cpp

 /*
 * Copyright (C) 2013 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 243 matching lines @@
     addRecordToTimeline(record.release(), time);
     if (m_state->getBoolean(TimelineAgentState::includeCounters)) {
         addRecordToTimeline(createCountersUpdate(), time);
     }
 }
 
 InspectorTimelineAgent::~InspectorTimelineAgent()
 {
 }
 
+void InspectorTimelineAgent::trace(Visitor* visitor)
+{
+    visitor->trace(m_pageAgent);
+    visitor->trace(m_layerTreeAgent);
+    InspectorBaseAgent::trace(visitor);
+}
+
 void InspectorTimelineAgent::setFrontend(InspectorFrontend* frontend)
 {
     m_frontend = frontend->timeline();
 }
 
 void InspectorTimelineAgent::clearFrontend()
 {
     ErrorString error;
     RefPtr<TypeBuilder::Array<TimelineEvent> > events;
     stop(&error, events);
@@ skipping 1031 matching lines @@
 
 #ifndef NDEBUG
 bool TimelineRecordStack::isOpenRecordOfType(const String& type)
 {
     return !m_stack.isEmpty() && m_stack.last().type == type;
 }
 #endif
 
 } // namespace WebCore