Partial revert of disabling low latency audio for remote desktop.

Partial revert of disabling low latency audio for remote desktop.

Crash and playback startup success rates remained the same before
and after this change, so reverting the additional complexity. I've
left the cleanup of internal functions though.

BUG=422522
TEST=things work as before.

Committed: https://crrev.com/933778ccbfaa26fc859f43da2f98eba966082e34
Cr-Commit-Position: refs/heads/master@{#325577}

[DaleCurtis, 2015-04-16 18:42:51]

dalecurtis@chromium.org changed reviewers:
+ henrika@chromium.org, tommi@chromium.org

[DaleCurtis, 2015-04-16 18:43:57]

No help with this stuff :( exploring STA change now.

[henrika (OOO until Aug 14), 2015-04-16 18:45:17]

LGTM

[DaleCurtis, 2015-04-16 21:46:37]

The CQ bit was checked by dalecurtis@chromium.org

[commit-bot: I haz the power, 2015-04-16 21:50:22]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1091093002/1

[commit-bot: I haz the power, 2015-04-17 01:56:49]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-04-17 01:58:37]

Patchset 1 (id:??) landed as
https://crrev.com/933778ccbfaa26fc859f43da2f98eba966082e34
Cr-Commit-Position: refs/heads/master@{#325577}