tracing_controller: Eliminates extra parameter of StartAgentTracingDone

tracing_controller: Eliminates extra parameter of StartAgentTracingDone

The previous implementation obscured the fact that 'callback' and
'on_start_tracing_done_' were actually the same function.

Committed: https://crrev.com/e474d3f7554314943b773e256abe75538c313186
Cr-Commit-Position: refs/heads/master@{#371317}

[charliea (OOO until 10-5), 2016-01-25 19:18:17]

The CQ bit was checked by charliea@chromium.org to run a CQ dry run

[charliea (OOO until 10-5), 2016-01-25 19:18:43]

charliea@chromium.org changed reviewers:
+ oysteine@chromium.org

[commit-bot: I haz the power, 2016-01-25 19:19:31]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1638443003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1638443003/1

[oystein (OOO til 10th of July), 2016-01-25 19:21:17]

lgtm

[commit-bot: I haz the power, 2016-01-25 20:37:58]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-01-25 20:37:59]

Dry run: This issue passed the CQ dry run.

[charliea (OOO until 10-5), 2016-01-25 21:15:58]

The CQ bit was checked by charliea@chromium.org

[commit-bot: I haz the power, 2016-01-25 21:19:08]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1638443003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1638443003/1

[commit-bot: I haz the power, 2016-01-25 21:27:34]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-01-25 21:28:49]

Description was changed from

==========
tracing_controller: Eliminates extra parameter of StartAgentTracingDone

The previous implementation obscured the fact that 'callback' and
'on_start_tracing_done_' were actually the same function.
==========

to

==========
tracing_controller: Eliminates extra parameter of StartAgentTracingDone

The previous implementation obscured the fact that 'callback' and
'on_start_tracing_done_' were actually the same function.

Committed: https://crrev.com/e474d3f7554314943b773e256abe75538c313186
Cr-Commit-Position: refs/heads/master@{#371317}
==========

[commit-bot: I haz the power, 2016-01-25 21:28:50]

Patchset 1 (id:??) landed as
https://crrev.com/e474d3f7554314943b773e256abe75538c313186
Cr-Commit-Position: refs/heads/master@{#371317}