Ensure that trackpad and trackpoint scrolling works on Windows desktop Aura with legacy trackpad dr…

content/browser/renderer_host/render_widget_host_view_aura.cc

Index: content/browser/renderer_host/render_widget_host_view_aura.cc
===================================================================
--- content/browser/renderer_host/render_widget_host_view_aura.cc	(revision 244237)
+++ content/browser/renderer_host/render_widget_host_view_aura.cc	(working copy)
@@ -2900,8 +2900,12 @@
     return;
 
   if (event->type() == ui::ET_SCROLL) {
+#if !defined(OS_WIN)
+    // TODO(ananta)
+    // Investigate if this is true for Windows 8 Metro ASH as well.
     if (event->finger_count() != 2)
       return;
+#endif
     blink::WebGestureEvent gesture_event =
         MakeWebGestureEventFlingCancel();
     host_->ForwardGestureEvent(gesture_event);