Setting Accurate ScrollResult from Blink for Elastic Scroll.

content/renderer/render_view_impl.cc

Index: content/renderer/render_view_impl.cc
diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
index 6856e6bb4fc66e23aea9f90b0f4a7faa3ee848c3..bb9034d8f3b795482169a57f7e7469f921ba3e45 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -1133,6 +1133,13 @@ void RenderView::ApplyWebPreferences(const WebPreferences& prefs,
   settings->setShowContextMenuOnMouseUp(prefs.context_menu_on_mouse_up);
 
 #if defined(OS_MACOSX)
+#if !defined(OS_IOS)
+  bool is_elastic_overscroll_enabled =
+      RenderViewImpl::FromWebView(web_view)
+          ? RenderViewImpl::FromWebView(web_view)->IsElasticOverscrollEnabled()
+          : false;
+  settings->setReportWheelOverscroll(is_elastic_overscroll_enabled);
+#endif
   settings->setDoubleTapToZoomEnabled(true);
   web_view->setMaximumLegibleScale(prefs.default_maximum_page_scale_factor);
 #endif