[not for review] Add Draw entries to window Performance Timeline

Source/core/timing/Performance.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2012 Intel 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.
@@ skipping 63 matching lines @@
     PerformanceTiming* timing() const;
     double now() const;
 
     PerformanceEntryVector getEntries() const;
     PerformanceEntryVector getEntriesByType(const String& entryType);
     PerformanceEntryVector getEntriesByName(const String& name, const String& entryType);
 
     void webkitClearResourceTimings();
     void webkitSetResourceTimingBufferSize(unsigned);
 
+    void webkitClearSmoothnessTimings();
+    void webkitSetSmoothnessTimingBufferSize(unsigned);
+
     DEFINE_ATTRIBUTE_EVENT_LISTENER(webkitresourcetimingbufferfull);
 
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(webkitsmoothnesstimingbufferfull);
+
     void addResourceTiming(const ResourceTimingInfo&, Document*);
 
+    void addSmoothnessTiming(const String&, Document*, unsigned, double);
+
     void mark(const String& markName, ExceptionState&);
     void clearMarks(const String& markName);
 
     void measure(const String& measureName, const String& startMark, const String& endMark, ExceptionState&);
     void clearMeasures(const String& measureName);
 
     virtual void trace(Visitor*) OVERRIDE;
 
 private:
     explicit Performance(LocalFrame*);
 
     bool isResourceTimingBufferFull();
     void addResourceTimingBuffer(PassRefPtrWillBeRawPtr<PerformanceEntry>);
 
+    bool isSmoothnessTimingBufferFull();
+    void addSmoothnessTimingBuffer(PassRefPtrWillBeRawPtr<PerformanceEntry>);
+
     mutable RefPtrWillBeMember<PerformanceNavigation> m_navigation;
     mutable RefPtrWillBeMember<PerformanceTiming> m_timing;
 
     PerformanceEntryVector m_resourceTimingBuffer;
     unsigned m_resourceTimingBufferSize;
+    PerformanceEntryVector m_smoothnessTimingBuffer;
+    unsigned m_smoothnessTimingBufferSize;
     double m_referenceTime;
 
     RefPtrWillBeMember<UserTiming> m_userTiming;
 };
 
 } // namespace blink
 
 #endif // Performance_h