Make host pairing screen the first screen for shark requisition.

Make host pairing screen the first screen for shark requisition.

With --show-host-pairing-demo and remora requisition, we start on the host pairing screen instead of the network screen.

There's an issue with the host pairing screen not being ready to accept context changes.

This is a temporary fix to get the end to end flow working. dzhioev@ will land a sequence of patches that are better long term.

BUG=405150
TEST=manual

Committed: https://crrev.com/5e1768a53d0abfb716997d91fbe7cc32d5ca6c8d
Cr-Commit-Position: refs/heads/master@{#294513}

[achuithb, 2014-09-11 14:49:50]

achuith@chromium.org changed reviewers:
+ dzhioev@chromium.org, zork@chromium.org

[achuithb, 2014-09-11 14:49:51]

Pavel, Zach, please review.

[Zachary Kuznia, 2014-09-11 15:40:21]

lgtm

[dzhioev (left Google), 2014-09-11 17:05:06]

LGTM

[achuithb, 2014-09-11 22:53:56]

On 2014/09/11 17:05:06, dzhioev wrote:
> LGTM

ty

[achuithb, 2014-09-11 22:54:01]

The CQ bit was checked by achuith@chromium.org

[commit-bot: I haz the power, 2014-09-11 23:22:34]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patchset/562923002/1

[commit-bot: I haz the power, 2014-09-12 00:59:05]

Committed patchset #1 (id:1) as fe1ab805ab954a495454f0bb57e56e1c853813e8

[commit-bot: I haz the power, 2014-09-12 01:02:46]

Patchset 1 (id:??) landed as
https://crrev.com/5e1768a53d0abfb716997d91fbe7cc32d5ca6c8d
Cr-Commit-Position: refs/heads/master@{#294513}