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

Source/core/timing/Performance.h

Index: Source/core/timing/Performance.h
diff --git a/Source/core/timing/Performance.h b/Source/core/timing/Performance.h
index e4941e1bad83b242854d10dace007f8bbe6c351c..04ba8326f1356233ad844bb775e06271d8826e8e 100644
--- a/Source/core/timing/Performance.h
+++ b/Source/core/timing/Performance.h
@@ -81,10 +81,17 @@ public:
     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);
 
@@ -99,11 +106,16 @@ private:
     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;