In rampup tests, set start time when starting poller thread.

In rampup tests, set start time when starting poller thread.

This should avoid perf change caused by
https://codereview.webrtc.org/1378303004

BUG=539257
R=stefan@webrtc.org

Committed: https://crrev.com/f3a7c9d732bcb4ed59323d78f5e521615a46fdc2
Cr-Commit-Position: refs/heads/master@{#10168}

[sprang_webrtc, 2015-10-05 08:53:05]

sprang@webrtc.org changed reviewers:
+ stefan@webrtc.org

[stefan-webrtc, 2015-10-05 08:54:55]

lgtm. consider fixing nit.

https://codereview.webrtc.org/1383223002/diff/1/webrtc/video/rampup_tests.cc
File webrtc/video/rampup_tests.cc (right):

https://codereview.webrtc.org/1383223002/diff/1/webrtc/video/rampup_tests.cc#...
webrtc/video/rampup_tests.cc:58: test_start_ms_(0),
I'd prefer initializing to -1.

[sprang_webrtc, 2015-10-05 09:46:29]

The CQ bit was checked by sprang@webrtc.org

[sprang_webrtc, 2015-10-05 09:46:29]

The patchset sent to the CQ was uploaded after l-g-t-m from stefan@webrtc.org
Link to the patchset: https://codereview.webrtc.org/1383223002/#ps20001 (title:
"Fixed nit")

[sprang_webrtc, 2015-10-05 09:46:37]

https://codereview.webrtc.org/1383223002/diff/1/webrtc/video/rampup_tests.cc
File webrtc/video/rampup_tests.cc (right):

https://codereview.webrtc.org/1383223002/diff/1/webrtc/video/rampup_tests.cc#...
webrtc/video/rampup_tests.cc:58: test_start_ms_(0),
On 2015/10/05 08:54:55, stefan-webrtc (holmer) wrote:
> I'd prefer initializing to -1.

Done.

[commit-bot: I haz the power, 2015-10-05 09:46:39]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1383223002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1383223002/20001

[commit-bot: I haz the power, 2015-10-05 11:46:52]

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

[commit-bot: I haz the power, 2015-10-05 11:46:52]

Try jobs failed on following builders:
  android_rel on tryserver.webrtc (JOB_TIMED_OUT, no build URL)

[sprang_webrtc, 2015-10-05 12:03:35]

Committed patchset #2 (id:20001) manually as
f3a7c9d732bcb4ed59323d78f5e521615a46fdc2 (presubmit successful).

[commit-bot: I haz the power, 2015-10-05 12:03:40]

Patchset 2 (id:??) landed as
https://crrev.com/f3a7c9d732bcb4ed59323d78f5e521615a46fdc2
Cr-Commit-Position: refs/heads/master@{#10168}