tree 37d72be0c7e5cc2fcb6d42c2f8b1eea79db29cdc
parent a41762f846103938431e746fdeb52d208969437f
author Sunny Goyal <sunnygoyal@google.com> 1592005268 -0700
committer Sunny Goyal <sunnygoyal@google.com> 1592247054 -0700

Preventing parallel motion event dispatching from view system and event proxy

1) When view system is already dispatching an event, proxy-dispatch is restricted
   to gesture only and follow the gesture dispatching rule.
2) If a full-proxy-dispatch is going on, and view-dispatch comes in, view-dispatch
   takes over and proxy-dispatch is cancelled.
3) During gesture-only proxy dispatch, if view-dispatch already started a gesture,
   proxy dispatch is ignored. Otherwise view-dispatch is restricted to non-gesture
   dispatching only (and proxy-dispatch is already restricted to gesture only).

Bug: 158130948
Change-Id: Ied351663e16beda5acf49a52bdefea881c18b9cf