This started happening in
https://chromium.googlesource.com/chromium/src/+/d76e906c94a8436ac136fd0652bc97961fb7d477

Assigning to the author.

I'll take a look. Thanks for filing the bug.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/3b752742ac2e7d85d2a568a4c512f6603ebf4f13

commit 3b752742ac2e7d85d2a568a4c512f6603ebf4f13
Author: Alexander Hendrich <hendrich@chromium.org>
Date: Wed Nov 07 10:46:02 2018

Fix TypeError in webRequestInternal.eventHandled

This CL is a followup to 1296539 and fixes a TypeError in
webRequestInternal.eventHandled() caused by this CL.
onHeadersReceived_ previously only returned headers when they contained
a SAML_HEADER, but the fix CL always returned all headers.

Bug:  900950 , 887061
Change-Id: Ic39e2bd6a98c6e2e3411812f7cd90310c32e1d3b
Reviewed-on: https://chromium-review.googlesource.com/c/1314471
Reviewed-by: John Abd-El-Malek <jam@chromium.org>
Commit-Queue: Alexander Hendrich <hendrich@chromium.org>
Cr-Commit-Position: refs/heads/master@{#606011}
[modify] https://crrev.com/3b752742ac2e7d85d2a568a4c512f6603ebf4f13/chrome/browser/resources/gaia_auth_host/saml_handler.js

Able to reproduce this issue on Ubuntu 17.10 on the reported version 72.0.3597.0 and the issue is fixed on the latest M-72 build 72.0.3605.0.

1. Launched Chrome and navigated to chrome://chrome-signin.
2. on navigating to devtools -> Console, cannot observe the error 'TypeError: Error in invocation of webRequestInternal.eventHandled(string eventName, string subEventName, string requestId, optional webRequest.BlockingResponse response): Error at parameter 'response': Unexpected property: 'frameId'.at subEventCallback (extensions::webRequestEvent:106:28)'

Attached is the screen shot for reference.

Hence adding TE verified labels as the fix is working as intended.

Thanks..

Deleted: 900950-M72.png 234 KB

	900950-M72.png 234 KB View Download