The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/14dfc0eebaef51c5156fc662a76be399bd336c3b

commit 14dfc0eebaef51c5156fc662a76be399bd336c3b
Author: Findit <findit-for-me@appspot.gserviceaccount.com>
Date: Thu Jan 10 21:03:36 2019

Revert "Reland: sync_integration_tests: don't instantiate ScopedFeatureList in test body"

This reverts commit a0f3d164c7bb26b7677cddc30b2e1f740d68542d.

Reason for revert:

Findit (https://goo.gl/kROfz5) identified CL at revision 621523 as the
culprit for flakes in the build cycles as shown on:
https://findit-for-me.appspot.com/waterfall/flake/flake-culprit?key=ag9zfmZpbmRpdC1mb3ItbWVyQwsSDEZsYWtlQ3VscHJpdCIxY2hyb21pdW0vYTBmM2QxNjRjN2JiMjZiNzY3N2NkZGMzMGIyZTFmNzQwZDY4NTQyZAw

Sample Failed Build: https://ci.chromium.org/buildbot/chromium.memory/Linux%20TSan%20Tests/32409

Sample Failed Step: sync_integration_tests

Sample Flaky Test: SingleClientWalletWithAccountStorageSyncTest.SwitchesBetweenAccountAndProfileStorageOnTogglingSync

Original change's description:
> Reland: sync_integration_tests: don't instantiate ScopedFeatureList in test body
> 
> This is a reland of https://crrev.com/c/1402799. The original CL was
> reverted for supposedly introducing flakiness, but in fact in only
> renamed an already-flaky test. That test has since been disabled, so
> trying again.
> 
> Creating a ScopedFeatureList instance in the test body creates a data
> race related to the global FeatureList instance: The ScopedFeatureList
> overrides the global instance, and then it gets reset after the test
> body; however, the feature list might still be queried from the Sync
> thread after that.
> 
> This CL avoids the issue by instead creating test (sub)classes to hold
> the ScopedFeatureLists.
> 
> Bug:  915219 
> Change-Id: Iaa6185d0dd9a042a9275100e3b1cae1eceb52633
> Reviewed-on: https://chromium-review.googlesource.com/c/1402890
> Reviewed-by: Mikel Astiz <mastiz@chromium.org>
> Commit-Queue: Marc Treib <treib@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#621523}

Change-Id: I3c8804e10fc6fd5c15e540f4b0441926da421634
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug:  915219 ,  920738 
Reviewed-on: https://chromium-review.googlesource.com/c/1405984
Cr-Commit-Position: refs/heads/master@{#621737}
[modify] https://crrev.com/14dfc0eebaef51c5156fc662a76be399bd336c3b/chrome/browser/sync/test/integration/single_client_secondary_account_sync_test.cc
[modify] https://crrev.com/14dfc0eebaef51c5156fc662a76be399bd336c3b/chrome/browser/sync/test/integration/single_client_sessions_sync_test.cc
[modify] https://crrev.com/14dfc0eebaef51c5156fc662a76be399bd336c3b/chrome/browser/sync/test/integration/single_client_standalone_transport_sync_test.cc
[modify] https://crrev.com/14dfc0eebaef51c5156fc662a76be399bd336c3b/chrome/browser/sync/test/integration/single_client_user_consents_sync_test.cc
[modify] https://crrev.com/14dfc0eebaef51c5156fc662a76be399bd336c3b/chrome/browser/sync/test/integration/single_client_wallet_sync_test.cc

The test was already flaky on TSan [1], my CL just renamed it. I'll disable it.

[1] https://test-results.appspot.com/dashboards/flakiness_dashboard.html#testType=sync_integration_tests&tests=SwitchesBetweenAccountAndProfileStorageOnTogglingSync

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/a1f5e2dfdc3427684524904abd49c98a0fa05b88

commit a1f5e2dfdc3427684524904abd49c98a0fa05b88
Author: Marc Treib <treib@chromium.org>
Date: Fri Jan 11 11:06:57 2019

Disable SingleClientWalletSyncTest.SwitchesBetweenAccountAndProfile... on TSan

It's flaky due to an SQLite data race.

Bug:  920738 ,  917380 
Change-Id: I3ed269d487daa25ebd973bda8b1689ebd22977ec
Reviewed-on: https://chromium-review.googlesource.com/c/1406708
Commit-Queue: Marc Treib <treib@chromium.org>
Commit-Queue: Jan Krcal <jkrcal@chromium.org>
Reviewed-by: Jan Krcal <jkrcal@chromium.org>
Cr-Commit-Position: refs/heads/master@{#621968}
[modify] https://crrev.com/a1f5e2dfdc3427684524904abd49c98a0fa05b88/chrome/browser/sync/test/integration/single_client_wallet_sync_test.cc