DevTools: switch Timeline frontend into buffered mode and remove the corresponding experiment.

Source/core/inspector/InspectorTimelineAgent.h

 /*
 * Copyright (C) 2012 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 110 matching lines @@
     }
 
     virtual ~InspectorTimelineAgent();
 
     virtual void setFrontend(InspectorFrontend*) OVERRIDE;
     virtual void clearFrontend() OVERRIDE;
     virtual void restore() OVERRIDE;
 
     virtual void enable(ErrorString*) OVERRIDE;
     virtual void disable(ErrorString*) OVERRIDE;
-    virtual void start(ErrorString*, const int* maxCallStackDepth, const bool* bufferEvents, const String* liveEvents, const bool* includeCounters, const bool* includeGPUEvents) OVERRIDE;
+    virtual void start(ErrorString*, const int* maxCallStackDepth, const String* liveEvents, const bool* includeCounters, const bool* includeGPUEvents) OVERRIDE;
     virtual void stop(ErrorString*, RefPtr<TypeBuilder::Array<TypeBuilder::Timeline::TimelineEvent> >& events) OVERRIDE;
 
     void setLayerTreeId(int layerTreeId) { m_layerTreeId = layerTreeId; }
     int id() const { return m_id; }
 
     void didCommitLoad();
 
     // Methods called from WebCore.
     bool willCallFunction(ExecutionContext*, int scriptId, const String& scriptName, int scriptLine);
     void didCallFunction();
@@ skipping 174 matching lines @@
     typedef HashMap<ThreadIdentifier, TimelineThreadState> ThreadStateMap;
     ThreadStateMap m_threadStates;
     bool m_mayEmitFirstPaint;
     HashSet<String> m_liveEvents;
     double m_lastProgressTimestamp;
 };
 
 } // namespace WebCore
 
 #endif // !defined(InspectorTimelineAgent_h)