Fix FakePortAllocator to keep reference to TransportContext.

Fix FakePortAllocator to keep reference to TransportContext.

Previously FakePortAllocator didn't keep reference to TransportContext
which was causing it to be destructed prematurely and crashing
remoting_perftests.

Committed: https://crrev.com/19cd0018c69864050567700e88f02c2280b4995c
Cr-Commit-Position: refs/heads/master@{#371980}

[Sergey Ulanov, 2016-01-28 01:49:24]

sergeyu@chromium.org changed reviewers:
+ jamiewalch@chromium.org

[Jamie, 2016-01-28 01:58:21]

lgtm

[Sergey Ulanov, 2016-01-28 02:06:42]

The CQ bit was checked by sergeyu@chromium.org

[commit-bot: I haz the power, 2016-01-28 02:08:04]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1644593003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1644593003/1

[commit-bot: I haz the power, 2016-01-28 03:07:31]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-01-28 03:09:22]

Description was changed from

==========
Fix FakePortAllocator to keep reference to TransportContext.

Previously FakePortAllocator didn't keep reference to TransportContext
which was causing it to be destructed prematurely and crashing
remoting_perftests.
==========

to

==========
Fix FakePortAllocator to keep reference to TransportContext.

Previously FakePortAllocator didn't keep reference to TransportContext
which was causing it to be destructed prematurely and crashing
remoting_perftests.

Committed: https://crrev.com/19cd0018c69864050567700e88f02c2280b4995c
Cr-Commit-Position: refs/heads/master@{#371980}
==========

[commit-bot: I haz the power, 2016-01-28 03:09:23]

Patchset 1 (id:??) landed as
https://crrev.com/19cd0018c69864050567700e88f02c2280b4995c
Cr-Commit-Position: refs/heads/master@{#371980}