Blink changes to record interest rects for http://w3c.github.io/frame-timing/

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 de4f1db8f21ed5d514d253e906107ba02a1b50db..8be421d2d4134e0523a4a3a5fb4efd03c876af38 100644
--- a/Source/core/timing/Performance.h
+++ b/Source/core/timing/Performance.h
@@ -81,8 +81,17 @@ public:
 
     DEFINE_ATTRIBUTE_EVENT_LISTENER(webkitresourcetimingbufferfull);
 
+    void clearFrameTimings();
+    void setFrameTimingBufferSize(unsigned);
+
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(frametimingbufferfull);
+
     void addResourceTiming(const ResourceTimingInfo&, Document*);
 
+    void addRenderTiming(Document*, unsigned, double);
+
+    void addCompositeTiming(Document*, unsigned, double);
+
     void mark(const String& markName, ExceptionState&);
     void clearMarks(const String& markName);
 
@@ -100,6 +109,11 @@ private:
     mutable Member<PerformanceNavigation> m_navigation;
     mutable Member<PerformanceTiming> m_timing;
 
+    bool isFrameTimingBufferFull();
+    void addFrameTimingBuffer(PerformanceEntry*);
+
+    PerformanceEntryVector m_frameTimingBuffer;
+    unsigned m_frameTimingBufferSize;
     PerformanceEntryVector m_resourceTimingBuffer;
     unsigned m_resourceTimingBufferSize;
     double m_referenceTime;