Remove FrameView::m_inProgrammaticScroll and related plumbing.

Source/core/frame/FrameView.h

Index: Source/core/frame/FrameView.h
diff --git a/Source/core/frame/FrameView.h b/Source/core/frame/FrameView.h
index 00ab6e1f88fce7795a698c9cb4fb248489743d38..7ce7376425132b13b5b54514c6da269ece9d9884 100644
--- a/Source/core/frame/FrameView.h
+++ b/Source/core/frame/FrameView.h
@@ -168,7 +168,6 @@ public:
     void setInputEventsTransformForEmulation(const IntSize&, float);
 
     virtual void setScrollPosition(const DoublePoint&, ScrollBehavior = ScrollBehaviorInstant) override;
-    void setScrollPositionNonProgrammatically(const IntPoint&);
 
     FloatSize elasticOverscroll() const { return m_elasticOverscroll; }
     void setElasticOverscroll(const FloatSize&);
@@ -319,9 +318,6 @@ public:
     // we need this function in order to do the scroll ourselves.
     ScrollResult wheelEvent(const PlatformWheelEvent&);
 
-    bool inProgrammaticScroll() const { return m_inProgrammaticScroll; }
-    void setInProgrammaticScroll(bool programmaticScroll) { m_inProgrammaticScroll = programmaticScroll; }
-
     virtual bool shouldUseIntegerScrollOffset() const override;
 
     virtual bool isActive() const override;
@@ -775,7 +771,6 @@ private:
     LayoutObject* m_viewportLayoutObject;
 
     bool m_wasScrolledByUser;
-    bool m_inProgrammaticScroll;
     bool m_safeToPropagateScrollToParent;
 
     double m_lastPaintTime;