DevTools: report timeline progress while recording.

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 268 matching lines @@
     void setFrameIdentifier(TypeBuilder::Timeline::TimelineEvent* record, LocalFrame*);
     void populateImageDetails(JSONObject* data, const RenderImage&);
 
     void pushGCEventRecords();
 
     void didCompleteCurrentRecord(const String& type);
     void unwindRecordStack();
 
     void commitFrameRecord();
 
-    void addRecordToTimeline(PassRefPtr<TypeBuilder::Timeline::TimelineEvent>);
+    void addRecordToTimeline(PassRefPtr<TypeBuilder::Timeline::TimelineEvent>, double ts);
     void innerAddRecordToTimeline(PassRefPtr<TypeBuilder::Timeline::TimelineEvent>);
     void clearRecordStack();
     PassRefPtr<TypeBuilder::Timeline::TimelineEvent> createRecordForEvent(const TraceEventDispatcher::TraceEvent&, const String& type, PassRefPtr<JSONObject> data);
 
     void localToPageQuad(const RenderObject& renderer, const LayoutRect&, FloatQuad*);
     long long nodeId(Node*);
     long long nodeId(RenderObject*);
     void releaseNodeIds();
 
     double timestamp();
@@ skipping 33 matching lines @@
     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)