Let the framework handle long clicks

If we manually propagate long click events, the framework can't include
coordinate information and we'll only be able to show a modal dialog.
Since the default long-click behavior is to show the context menu, just
let the framework handle it.

Bug: 25214386
Change-Id: I32e14b326ac91cc5a9c2bf7581325daaba34298e
1 file changed