tree d5b0abb90f3338c1100d7839c460530a42522801
parent 5616670a5aee8807cddfd5d9dfe7585e1dffbff5
author Tony <twickham@google.com> 1550302744 -0800
committer Tony <twickham@google.com> 1550616863 -0800

Only stabilize tasks during quick switch session

- A stabilization session starts when going to a new task via a quick switch
- A stabilization session ends after 5 seconds on the same task or when completing
  a gesture to go to home or overview
- We track the system task order and copy it for the duration of the stabilization session
- After the session ends, we switch back to the system task order
- Remove ENABLE_TASK_STABILIZATION flag (and also QUICK_SWITCH)

Bug: 111926330
Change-Id: I2c18dff2d20ad02b73a4935ac534e9fc9f5f49c0