Able to reproduce th eissue on Mac,Windows 7 & Ubuntu 14.04 using latest Canary#61.0.3147.0.
Manual Bisect info:
------------------
Good build: 61.0.3128.0-Revision-478527
Bad build: 61.0.3129.0-Revision-478840

Per revision bisect info:
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You are probably looking for a change made after 478751 (known good), but no later than 478752 (first known bad).
CHANGELOG URL:
The script might not always return single CL as suspect as some perf builds might get missing due to failure.
https://chromium.googlesource.com/chromium/src/+log/3fc5cf5d90d28fb3d4beb5c47004f8406f2d050c..0c1d266856c65b2c4238cd7dae00ebcd4cc7cb01

Possible suspect:
----------------
https://chromium.googlesource.com/chromium/src/+/0c1d266856c65b2c4238cd7dae00ebcd4cc7cb01

pnoland@Could you please take a look & reassign to the respective owner if it is not related to your change.

Thanks..!!

This is a result of a (brief) period during which sync setup is incomplete but is reported as not being in progress. OneClickSigninSyncStarter deletes its sync_blocker(effectively a handle that tells sync that a confirmation ui is currently active somewhere in the browser) and navigates to the sync settings page. The settings page eventually acquires its own sync_blocker, but until it loads, no sync_blocker exists, causing sync to think that the setup isn't in progress, even when it is. I am looking at how to best fix this. 

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/a7580295ea5bc9ae2c4c8c8d02821d56ecdc2af0

commit a7580295ea5bc9ae2c4c8c8d02821d56ecdc2af0
Author: pnoland <pnoland@chromium.org>
Date: Mon Jul 17 20:48:51 2017

[sync] Prevent flash of error icon while loading syncSetup page

Profile sync service relies on the lifetime of
SyncSetupInProgressHandles to determine if setup is in progress.
Currently, none of these handles are alive in the period between the
closure of the sync confirmation dialog and the loading of the sync
setup page. This causes profile sync service to think that setup is both
incomplete and not in progress, which surfaces an error icon on the
avatar.

This CL causes PeopleHandler to acquire its SyncSetupInProgressHandle
earlier if it detects that it's navigating directly to the syncSetup
page.

R=
BUG= 738789 

Review-Url: https://codereview.chromium.org/2971353002
Cr-Commit-Position: refs/heads/master@{#487236}

[modify] https://crrev.com/a7580295ea5bc9ae2c4c8c8d02821d56ecdc2af0/chrome/browser/ui/webui/settings/people_handler.cc
[modify] https://crrev.com/a7580295ea5bc9ae2c4c8c8d02821d56ecdc2af0/chrome/browser/ui/webui/settings/people_handler.h
[modify] https://crrev.com/a7580295ea5bc9ae2c4c8c8d02821d56ecdc2af0/chrome/browser/ui/webui/settings/people_handler_unittest.cc