CL:

https://chromium-review.googlesource.com/c/chromium/src/+/1050938

Pls apply appropriate OSs label. Thank you.

This is a simple and very safe merge, which fixes an issue where too much
data was being sent to the server.

Is this cl https://chromium-review.googlesource.com/c/chromium/src/+/1050938 verified in canary?

This bug requires manual review: M67 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), cmasso@(iOS), kbleicher@(ChromeOS), govind@(Desktop)

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

*** Bulk Edit ***
M67 Stable promotion is coming VERY soon. Your bug is labelled as Stable ReleaseBlock, pls make sure to land the fix and request a merge into the release branch ASAP. 

If fix is already merged to M67 and nothing else is pending, pls mark the bug as fixed. Thank you.

chrishtr@ to update bug with canary result tomorrow. Thank you.

The NextAction date has arrived: 2018-05-11

I think this is ready for merge.

Approving merge to M67 branch 3396 based on comment #4 and #10. Please merge and mark bug as fixed. Thank you.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/dd35637950932ec017915a1177bf63a62bd1b846

commit dd35637950932ec017915a1177bf63a62bd1b846
Author: Chris Harrelson <chrishtr@chromium.org>
Date: Fri May 11 21:52:41 2018

Increase rendering UKM sampling period to 30 seconds.

At a 1-second aggregation period, the UKM team reports
that there is too much data being collected, which
causes too much user bandwidth.

See internal b/79071304.

TBR=chrishtr@chromium.org

(cherry picked from commit 79f554bc2d62df9ffcac3ad7e9460c9acfdae9f4)

Bug:  841527 
Change-Id: I9553b56a0b8b2b32229c7ee11586640c4f0a0a6f
Reviewed-on: https://chromium-review.googlesource.com/1050938
Reviewed-by: Philip Rogers <pdr@chromium.org>
Commit-Queue: Chris Harrelson <chrishtr@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#557097}
Reviewed-on: https://chromium-review.googlesource.com/1056154
Reviewed-by: Chris Harrelson <chrishtr@chromium.org>
Cr-Commit-Position: refs/branch-heads/3396@{#575}
Cr-Branched-From: 9ef2aa869bc7bc0c089e255d698cca6e47d6b038-refs/heads/master@{#550428}
[modify] https://crrev.com/dd35637950932ec017915a1177bf63a62bd1b846/third_party/blink/renderer/core/frame/local_frame_view.cc