Remove FrameView::m_inProgrammaticScroll and related plumbing.

Source/core/page/EventHandler.cpp

Index: Source/core/page/EventHandler.cpp
diff --git a/Source/core/page/EventHandler.cpp b/Source/core/page/EventHandler.cpp
index dd3c5aee907340e0eb1b561e52fb6f57dfe5547c..f84ff3f8b7a2ef45b1af341ffc054ba0566f1fa4 100644
--- a/Source/core/page/EventHandler.cpp
+++ b/Source/core/page/EventHandler.cpp
@@ -987,8 +987,10 @@ bool EventHandler::bubblingScroll(ScrollDirection direction, ScrollGranularity g
         return true;
     LocalFrame* frame = m_frame;
     FrameView* view = frame->view();
-    if (view && view->scroll(direction, granularity))
+    if (view && view->scroll(direction, granularity)) {
+        setFrameWasScrolledByUser();
         return true;
+    }
     Frame* parentFrame = frame->tree().parent();
     if (!parentFrame || !parentFrame->isLocalFrame())
         return false;