For details, see internal bug: b/110354086.
Looks like the migration work done in "Convert Extensions TCP & TLS Socket APIs to mojo sockets" (https://chromium-review.googlesource.com/c/chromium/src/+/1070434) introduced a behavior change and caused a breakage in an internal Chrome app that uses the extensions TCP socket APIs.
M69 just branched yesterday (July 19). I think it's safer to revert, merge the revert to M69. Investigate and reland the CL in M70.
Comment 1 by xunji...@chromium.org
, Jul 20