The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/a80e3739664310574bd1eccc3a012f18d722bab3

commit a80e3739664310574bd1eccc3a012f18d722bab3
Author: Florian Uunk <feuunk@chromium.org>
Date: Mon Jun 11 18:06:46 2018

Record the time of day in GMT at startup

This will be used to get traffic estimates for requests that are made
at Chrome startup.

Bug:  850442 
Change-Id: I72805e9a36184dc8d45e22d649f075ab19df0c04
Reviewed-on: https://chromium-review.googlesource.com/1090276
Commit-Queue: Florian Uunk <feuunk@chromium.org>
Reviewed-by: Robert Kaplow <rkaplow@chromium.org>
Reviewed-by: François Doray <fdoray@chromium.org>
Cr-Commit-Position: refs/heads/master@{#566056}
[modify] https://crrev.com/a80e3739664310574bd1eccc3a012f18d722bab3/components/startup_metric_utils/browser/startup_metric_utils.cc
[modify] https://crrev.com/a80e3739664310574bd1eccc3a012f18d722bab3/tools/metrics/histograms/histograms.xml

Requesting merge for reasoning described in #1.

Let's wait until it lands in canary first and is verified. 

The bug is marked as P3 or Feature. It should not be merged as M68 is in beta. 
Please contact the approriate milestone owner if you have questions.
Owners: cmasso@(Android), kariahda@(iOS), bhthompson@(ChromeOS), abdulsyed@(Desktop)

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

This is Canary now, and I've verified that the patch works as expected. Also, the UMA data looks good: https://uma.googleplex.com/histograms?endDate=20180611&dayCount=1&histograms=Startup.TimeOfDayGMT&fixupData=true&showMax=true&filters=isofficial%2Ceq%2CTrue&implicitFilters=isofficial

Requesting an exception to the auto-reject in #4 for the following reasons:

- This patch is small, and all it does is add extra UMA logging
- The UMA data will be very valuable in providing us traffic estimates, which SRE will use to determine how much we need to scale our backends.

See here for more info (internal only): https://docs.google.com/document/d/1o8senySiqZwaWoFYIPw8_ReQZbAU7G0D3OCLRXTMmeQ/edit#heading=h.eww4j4q6yazg

Thanks!

This bug requires manual review: M68 has already been promoted to the beta branch, so this requires manual review
Please contact the milestone owner if you have questions.
Owners: cmasso@(Android), kariahda@(iOS), bhthompson@(ChromeOS), abdulsyed@(Desktop)

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Approving merge to M68. Branch:3440

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/a252579b3671af9ffeb6de50861928f9ef9d506e

commit a252579b3671af9ffeb6de50861928f9ef9d506e
Author: Florian Uunk <feuunk@chromium.org>
Date: Mon Jun 18 09:38:01 2018

Record the time of day in GMT at startup

This will be used to get traffic estimates for requests that are made
at Chrome startup.

Bug:  850442 
Change-Id: I72805e9a36184dc8d45e22d649f075ab19df0c04
Reviewed-on: https://chromium-review.googlesource.com/1090276
Commit-Queue: Florian Uunk <feuunk@chromium.org>
Reviewed-by: Robert Kaplow <rkaplow@chromium.org>
Reviewed-by: François Doray <fdoray@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#566056}(cherry picked from commit a80e3739664310574bd1eccc3a012f18d722bab3)
Reviewed-on: https://chromium-review.googlesource.com/1104197
Reviewed-by: Marc Treib <treib@chromium.org>
Cr-Commit-Position: refs/branch-heads/3440@{#391}
Cr-Branched-From: 010ddcfda246975d194964ccf20038ebbdec6084-refs/heads/master@{#561733}
[modify] https://crrev.com/a252579b3671af9ffeb6de50861928f9ef9d506e/components/startup_metric_utils/browser/startup_metric_utils.cc
[modify] https://crrev.com/a252579b3671af9ffeb6de50861928f9ef9d506e/tools/metrics/histograms/histograms.xml