Looks like if we start using IPC::ChannelHandle::mojo_handle in GPU, we will not need a ChannelHandle in mojom anymore. We could just pass a mojo handle around.

Any updates on this?  We're planning on promoting M54 to Dev next week so it should be fixed/resolved by then.

I don't believe this should be a release-blocker until the team starts shipping mus/mash in dev.

As for blocking dependency, it should be submitted soon (I _just_ got the lgtm). Once that's stuck for a few days, I think the type converter can be removed.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/a7280ca5addaf050ea058416990a3eb1a12aba5e

commit a7280ca5addaf050ea058416990a3eb1a12aba5e
Author: penghuang <penghuang@chromium.org>
Date: Thu Aug 18 15:20:04 2016

services/ui: Get rid of IPC::ChannelHandle type converter

BUG= 625557 

Review-Url: https://codereview.chromium.org/2247183005
Cr-Commit-Position: refs/heads/master@{#412832}

[modify] https://crrev.com/a7280ca5addaf050ea058416990a3eb1a12aba5e/services/ui/common/gpu_type_converters.cc
[modify] https://crrev.com/a7280ca5addaf050ea058416990a3eb1a12aba5e/services/ui/common/gpu_type_converters.h
[modify] https://crrev.com/a7280ca5addaf050ea058416990a3eb1a12aba5e/services/ui/common/gpu_type_converters_unittest.cc
[modify] https://crrev.com/a7280ca5addaf050ea058416990a3eb1a12aba5e/services/ui/gpu/gpu_service_impl.cc
[modify] https://crrev.com/a7280ca5addaf050ea058416990a3eb1a12aba5e/services/ui/gpu/gpu_service_mus.cc
[modify] https://crrev.com/a7280ca5addaf050ea058416990a3eb1a12aba5e/services/ui/gpu/gpu_service_mus.h
[modify] https://crrev.com/a7280ca5addaf050ea058416990a3eb1a12aba5e/services/ui/public/cpp/gpu_service.cc
[modify] https://crrev.com/a7280ca5addaf050ea058416990a3eb1a12aba5e/services/ui/public/cpp/gpu_service.h
[modify] https://crrev.com/a7280ca5addaf050ea058416990a3eb1a12aba5e/services/ui/public/interfaces/BUILD.gn
[delete] https://crrev.com/208cb0cd3a4126cca32286ee9afbb7597bf03e08/services/ui/public/interfaces/channel_handle.mojom
[modify] https://crrev.com/a7280ca5addaf050ea058416990a3eb1a12aba5e/services/ui/public/interfaces/gpu_service.mojom