I don't see any attachment. Did you forget to include it?

This is WAI, although I agree we should improve it. The problem is that adding new error messages is non-trivial right now, so I re-used an existing one.

We will discuss this at triage.

Please prioritize and assign.

We will discuss this at triage.

Zijie, can you take a look? I think the offending line in the host code is https://code.google.com/p/chromium/codesearch#chromium/src/remoting/protocol/me2me_host_authenticator_factory.cc&sq=package:chromium&type=cs&l=116&rcl=1463498288, but you'll need to plumb the new error code through to the client and telemetry as well. If possible, it would be good to get the Chromium changes landed for M52.

Working on it.

I believe this bug is talking about it2me scenario instead of me2me scenario. It looks like the logic in me2me_host_authenticator_factory.cc line 116 should not be triggered.
But no matter, I have updated both it2me_host_authenticator_factory and me2me_host_authenticator_factory.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/49b8bb897e86d171f9a5379086d9dec6812549a2

commit 49b8bb897e86d171f9a5379086d9dec6812549a2
Author: zijiehe <zijiehe@chromium.org>
Date: Sat May 21 00:24:12 2016

This change is to add DOMAIN_MISMATCH message end to end.

Currently if host client domain policy has been enabled, and client with a
different domain tries to access a host in it2me scenario, invalid access code
will be shown, but indeed the error message should be domain mismatch.

BUG= 611544 

Review-Url: https://codereview.chromium.org/1987163002
Cr-Commit-Position: refs/heads/master@{#395215}

[modify] https://crrev.com/49b8bb897e86d171f9a5379086d9dec6812549a2/remoting/android/java/src/org/chromium/chromoting/jni/ConnectionListener.java
[modify] https://crrev.com/49b8bb897e86d171f9a5379086d9dec6812549a2/remoting/base/chromoting_event.h
[modify] https://crrev.com/49b8bb897e86d171f9a5379086d9dec6812549a2/remoting/client/client_telemetry_logger.cc
[modify] https://crrev.com/49b8bb897e86d171f9a5379086d9dec6812549a2/remoting/client/ios/build/localizable_string_id_list.txt
[modify] https://crrev.com/49b8bb897e86d171f9a5379086d9dec6812549a2/remoting/client/plugin/chromoting_instance.cc
[modify] https://crrev.com/49b8bb897e86d171f9a5379086d9dec6812549a2/remoting/client/server_log_entry_client.cc
[modify] https://crrev.com/49b8bb897e86d171f9a5379086d9dec6812549a2/remoting/protocol/authenticator.h
[modify] https://crrev.com/49b8bb897e86d171f9a5379086d9dec6812549a2/remoting/protocol/errors.cc
[modify] https://crrev.com/49b8bb897e86d171f9a5379086d9dec6812549a2/remoting/protocol/errors.h
[modify] https://crrev.com/49b8bb897e86d171f9a5379086d9dec6812549a2/remoting/protocol/it2me_host_authenticator_factory.cc
[modify] https://crrev.com/49b8bb897e86d171f9a5379086d9dec6812549a2/remoting/protocol/jingle_messages.cc
[modify] https://crrev.com/49b8bb897e86d171f9a5379086d9dec6812549a2/remoting/protocol/jingle_messages.h
[modify] https://crrev.com/49b8bb897e86d171f9a5379086d9dec6812549a2/remoting/protocol/jingle_session.cc
[modify] https://crrev.com/49b8bb897e86d171f9a5379086d9dec6812549a2/remoting/protocol/me2me_host_authenticator_factory.cc
[modify] https://crrev.com/49b8bb897e86d171f9a5379086d9dec6812549a2/remoting/resources/remoting_strings.grd
[modify] https://crrev.com/49b8bb897e86d171f9a5379086d9dec6812549a2/remoting/webapp/base/js/chromoting_event.js
[modify] https://crrev.com/49b8bb897e86d171f9a5379086d9dec6812549a2/remoting/webapp/base/js/client_session.js
[modify] https://crrev.com/49b8bb897e86d171f9a5379086d9dec6812549a2/remoting/webapp/base/js/error.js

Moving this nonessential bug to the next milestone.

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