The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/10ade88a1c523c3d785bf6f0540884b7e243483c

commit 10ade88a1c523c3d785bf6f0540884b7e243483c
Author: Kim Paulhamus <kpaulhamus@chromium.org>
Date: Fri Apr 20 19:33:05 2018

Update error message in case of mojom connection failure

The message right now assumes mojom::CredentialManager failed,
but it could have been mojom::AuthenticatorImpl.

Bug:  832910 
Change-Id: Ibaca9d938ffe854ab6ee81a3aa56721991e505e6
Reviewed-on: https://chromium-review.googlesource.com/1012967
Reviewed-by: Balazs Engedy <engedy@chromium.org>
Commit-Queue: Kim Paulhamus <kpaulhamus@chromium.org>
Cr-Commit-Position: refs/heads/master@{#552429}
[modify] https://crrev.com/10ade88a1c523c3d785bf6f0540884b7e243483c/third_party/blink/renderer/modules/credentialmanager/credentials_container.cc

Requesting merge to m67. 

The current failure error prior to this CL only mentioned password manager, not webauthn, whichwass confusing to users attempting to use webauthn.
With the feature now enabled by default, this error *shouldn't* ever happen, but we want to have the right error message in case a user does disable the feature.

Your change meets the bar and is auto-approved for M67. Please go ahead and merge the CL to branch 3396 manually. Please contact 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

Pls merge your change to M67 branch 3396 ASAP so we can pick it up for next M67 Beta release. Thank you.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/3ae6822a7ea960fee996e30f7701846a40928272

commit 3ae6822a7ea960fee996e30f7701846a40928272
Author: Kim Paulhamus <kpaulhamus@chromium.org>
Date: Wed Apr 25 00:21:24 2018

Update error message in case of mojom connection failure

The message right now assumes mojom::CredentialManager failed,
but it could have been mojom::AuthenticatorImpl.

Bug:  832910 
Change-Id: Ibaca9d938ffe854ab6ee81a3aa56721991e505e6
Reviewed-on: https://chromium-review.googlesource.com/1012967
Reviewed-by: Balazs Engedy <engedy@chromium.org>
Commit-Queue: Kim Paulhamus <kpaulhamus@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#552429}(cherry picked from commit 10ade88a1c523c3d785bf6f0540884b7e243483c)
Reviewed-on: https://chromium-review.googlesource.com/1026436
Reviewed-by: Kim Paulhamus <kpaulhamus@chromium.org>
Cr-Commit-Position: refs/branch-heads/3396@{#276}
Cr-Branched-From: 9ef2aa869bc7bc0c089e255d698cca6e47d6b038-refs/heads/master@{#550428}
[modify] https://crrev.com/3ae6822a7ea960fee996e30f7701846a40928272/third_party/blink/renderer/modules/credentialmanager/credentials_container.cc