Revert of Cleanup viewport scrolling for future scroll customization work.

content/renderer/gpu/render_widget_compositor.cc

Index: content/renderer/gpu/render_widget_compositor.cc
diff --git a/content/renderer/gpu/render_widget_compositor.cc b/content/renderer/gpu/render_widget_compositor.cc
index 1b12927c4f7c8ce4ec5f23424e94ece0702295c5..f0a15aaed9fc15c1146157b50a13ffb022b82ea3 100644
--- a/content/renderer/gpu/render_widget_compositor.cc
+++ b/content/renderer/gpu/render_widget_compositor.cc
@@ -443,8 +443,6 @@
   settings.use_external_begin_frame_source = true;
 
 #elif !defined(OS_MACOSX)
-  settings.report_overscroll_only_for_scrollable_axes = false;
-
   if (ui::IsOverlayScrollbarEnabled()) {
     settings.scrollbar_animator = cc::LayerTreeSettings::THINNING;
     settings.solid_color_scrollbar_color = SkColorSetARGB(128, 128, 128, 128);