Remove "reportWheelOverscroll" from Blink settings.

content/renderer/render_widget.cc

Index: content/renderer/render_widget.cc
diff --git a/content/renderer/render_widget.cc b/content/renderer/render_widget.cc
index 0f53306133004e870e0fbca12970d1156fdd0860..1759842940ee685feb65bdab729ab08571d3d061 100644
--- a/content/renderer/render_widget.cc
+++ b/content/renderer/render_widget.cc
@@ -1993,6 +1993,13 @@ void RenderWidget::didOverscroll(
     const blink::WebFloatSize& accumulatedRootOverScroll,
     const blink::WebFloatPoint& position,
     const blink::WebFloatSize& velocity) {
+#if defined(OS_MACOSX)
+  // On OSX the user can disable the elastic overscroll effect. If that's the
+  // case, don't forward the overscroll notification.
+  DCHECK(compositor_deps());
+  if (!compositor_deps()->IsElasticOverscrollEnabled())
+    return;
+#endif
   input_handler_->DidOverscrollFromBlink(unusedDelta, accumulatedRootOverScroll,
                                          position, velocity);
 }