Use monotonicallyIncreasingTime for Timeline timestamps

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 72 matching lines @@
 class ScriptArguments;
 class ScriptCallStack;
 class ScriptState;
 class TimelineRecordStack;
 class WebSocketHandshakeRequest;
 class WebSocketHandshakeResponse;
 class XMLHttpRequest;
 
 typedef String ErrorString;
 
-class TimelineTimeConverter {
-public:
-    TimelineTimeConverter()
-        : m_startOffset(0)
-    {
-    }
-    double fromMonotonicallyIncreasingTime(double time) const  { return (time - m_startOffset) * 1000.0; }
-    void reset();
-
-private:
-    double m_startOffset;
-};
-
 class InspectorTimelineAgent FINAL
     : public TraceEventTarget<InspectorTimelineAgent>
     , public InspectorBaseAgent<InspectorTimelineAgent>
     , public ScriptGCEventListener
     , public InspectorBackendDispatcher::TimelineCommandHandler
     , public PlatformInstrumentationClient {
     WTF_MAKE_NONCOPYABLE(InspectorTimelineAgent);
 public:
     enum InspectorType { PageInspector, WorkerInspector };
 
@@ skipping 193 matching lines @@
     InspectorDOMAgent* m_domAgent;
     InspectorLayerTreeAgent* m_layerTreeAgent;
     InspectorFrontend::Timeline* m_frontend;
     InspectorClient* m_client;
     InspectorOverlay* m_overlay;
     InspectorType m_inspectorType;
 
     int m_id;
     unsigned long long m_layerTreeId;
 
-    TimelineTimeConverter m_timeConverter;
     int m_maxCallStackDepth;
 
     Vector<TimelineRecordEntry> m_recordStack;
     RefPtr<TypeBuilder::Array<TypeBuilder::Timeline::TimelineEvent> > m_bufferedEvents;
     Vector<String> m_consoleTimelines;
 
     typedef Vector<TimelineGCEvent> GCEvents;
     GCEvents m_gcEvents;
     unsigned m_platformInstrumentationClientInstalledAtStackDepth;
     RefPtr<TypeBuilder::Timeline::TimelineEvent> m_pendingFrameRecord;
     RefPtr<TypeBuilder::Timeline::TimelineEvent> m_pendingGPURecord;
     typedef HashMap<unsigned long long, TimelineImageInfo> PixelRefToImageInfoMap;
     PixelRefToImageInfoMap m_pixelRefToImageInfo;
     RenderImage* m_imageBeingPainted;
     HashMap<unsigned long long, long long> m_layerToNodeMap;
     double m_paintSetupStart;
     double m_paintSetupEnd;
     RefPtr<JSONObject> m_gpuTask;
     unsigned m_styleRecalcElementCounter;
     typedef HashMap<ThreadIdentifier, TimelineThreadState> ThreadStateMap;
     ThreadStateMap m_threadStates;
     bool m_mayEmitFirstPaint;
     HashSet<String> m_liveEvents;
     double m_lastProgressTimestamp;
 };
 
 } // namespace WebCore
 
 #endif // !defined(InspectorTimelineAgent_h)