The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/977b13bbcc96e7dd1cf500909e29c677e8257776

commit 977b13bbcc96e7dd1cf500909e29c677e8257776
Author: rtenneti <rtenneti@chromium.org>
Date: Tue May 24 20:52:18 2016

QUIC - added disable_delay_tcp_race field trial param to disable
delaying of racing TCP connection.

When this param is set to true, TCP and QUIC connections will be raced
without any delay.

BUG= 613259 
R=rch@chromium.org

Review-Url: https://codereview.chromium.org/1998863002
Cr-Commit-Position: refs/heads/master@{#395688}

[modify] https://crrev.com/977b13bbcc96e7dd1cf500909e29c677e8257776/components/network_session_configurator/network_session_configurator.cc
[modify] https://crrev.com/977b13bbcc96e7dd1cf500909e29c677e8257776/components/network_session_configurator/network_session_configurator_unittest.cc

25 Mei 2016 03.55, "bugdroid1@chromium.org via Monorail" <
monorail@chromium.org> menulis:

The fix in Comment#1 gives the ability to run an experiment that disables TCP race. Missed the branch (was working on another crash bug). This change will give us the ability to turn off the QUIC experiment (if we find that the delay_tcp_race shouldn't be enabled by default via finch field trials).

This change is in Canary in 53.0.2748.0 (Branch Base Position: 395748) for 17 hours.

Your change meets the bar and is auto-approved for M52 (branch: 2743)

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/556a3255a9a88105467c520cd8d54911a53b97bb

commit 556a3255a9a88105467c520cd8d54911a53b97bb
Author: Raman Tenneti <rtenneti@google.com>
Date: Thu May 26 00:35:27 2016

QUIC - added disable_delay_tcp_race field trial param to disable
delaying of racing TCP connection.

When this param is set to true, TCP and QUIC connections will be raced
without any delay.

BUG= 613259 
TBR=rch@chromium.org

Review-Url: https://codereview.chromium.org/1998863002/#ps20001
Cr-Commit-Position: refs/heads/master@{#395688}
(cherry picked from commit 977b13bbcc96e7dd1cf500909e29c677e8257776 Patch Set 2 of 1998863002)

Review URL: https://codereview.chromium.org/2009403002 .

Cr-Commit-Position: refs/branch-heads/2743@{#68}
Cr-Branched-From: 2b3ae3b8090361f8af5a611712fc1a5ab2de53cb-refs/heads/master@{#394939}

[modify] https://crrev.com/556a3255a9a88105467c520cd8d54911a53b97bb/chrome/browser/io_thread.cc
[modify] https://crrev.com/556a3255a9a88105467c520cd8d54911a53b97bb/chrome/browser/io_thread_unittest.cc