ozone: evdev: Make sure to device list update during startup scan

ozone: evdev: Make sure to device list update during startup scan

Device removal currently immediately updates the device list (ignoring
pending_device_changes_), which could violate our promise to delay list
updates until we've finished enumerating connected devices at startup.
We make this promise to allow the UI to make decisions based on absence
of devices once a full scan completes.

This probably doesn't happen, but make it impossible anyway.

Committed: https://crrev.com/4ebae701ff499f2afaadb79f39dd2a6b1f0f5a97
Cr-Commit-Position: refs/heads/master@{#333743}

[spang, 2015-06-09 22:34:44]

spang@chromium.org changed reviewers:
+ kpschoedel@chromium.org

[kpschoedel, 2015-06-09 23:13:07]

lgtm

[spang, 2015-06-10 16:17:11]

The CQ bit was checked by spang@chromium.org

[commit-bot: I haz the power, 2015-06-10 16:17:57]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1170373002/1

[commit-bot: I haz the power, 2015-06-10 16:39:42]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-06-10 16:40:31]

Patchset 1 (id:??) landed as
https://crrev.com/4ebae701ff499f2afaadb79f39dd2a6b1f0f5a97
Cr-Commit-Position: refs/heads/master@{#333743}