Delete paint invalidation rect tracking.

sky/engine/core/frame/FrameView.h

Index: sky/engine/core/frame/FrameView.h
diff --git a/sky/engine/core/frame/FrameView.h b/sky/engine/core/frame/FrameView.h
index da83d916b4fa2f950a32cba0e91f7041c55b35f6..8ba2dc818a4a3a9caf9882a696d44ffa2c342a82 100644
--- a/sky/engine/core/frame/FrameView.h
+++ b/sky/engine/core/frame/FrameView.h
@@ -164,12 +164,6 @@ public:
     // FIXME: Remove this method once plugin loading is decoupled from layout.
     void flushAnyPendingPostLayoutTasks();
 
-    void setTracksPaintInvalidations(bool);
-    bool isTrackingPaintInvalidations() const { return m_isTrackingPaintInvalidations; }
-    void resetTrackedPaintInvalidations();
-
-    String trackedPaintInvalidationRectsAsText() const;
-
     typedef HashSet<ScrollableArea*> ScrollableAreaSet;
     void addScrollableArea(ScrollableArea*);
     void removeScrollableArea(ScrollableArea*);
@@ -278,9 +272,6 @@ private:
 
     double m_lastPaintTime;
 
-    bool m_isTrackingPaintInvalidations; // Used for testing.
-    Vector<IntRect> m_trackedPaintInvalidationRects;
-
     RefPtr<Node> m_nodeToDraw;
     bool m_isPainting;