Revert of Introduce InterfaceEndpointClient(IEC), InterfaceEndpointHandle and

Revert of Introduce InterfaceEndpointClient(IEC), InterfaceEndpointHandle and (patchset #14 id:260001 of https://codereview.chromium.org/2744963002/ )

Reason for revert:
This CL makes BluetoothInternalsTest.Startup_BluetoothInternals flaky. See FindIt report https://findit-for-me.appspot.com/waterfall/failure?url=https%3A%2F%2Fbuild.chromium.org%2Fp%2Fchromium.linux%2Fbuilders%2FLinux%2520Tests%2520%2528dbg%2529%25281%2529%252832%2529%2Fbuilds%2F39814

Also check details in the bug.
BUG=707725
Original issue's description:
> Introduce InterfaceEndpointClient(IEC), InterfaceEndpointHandle and
> PipeControlMessage Handler/Proxy. Move accept message and handling code from
> Router to IEC. There is still only 1 interface on a message pipe, but this
> work helps setup for associated interfaces.
> 
> BUG=695635
> 
> Review-Url: https://codereview.chromium.org/2744963002
> Cr-Commit-Position: refs/heads/master@{#460817}
> Committed: https://chromium.googlesource.com/chromium/src/+/087549eb773ef4b5fd43b5bd57f1a9ddfceeb486

TBR=rockot@chromium.org,eugenebut@chromium.org,jam@chromium.org,yzshen@chromium.org,wangjimmy@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=695635

[kolos1, 2017-04-03 10:56:10]

The CQ bit was checked by kolos@chromium.org

[kolos1, 2017-04-03 10:56:12]

Created Revert of Introduce InterfaceEndpointClient(IEC),
InterfaceEndpointHandle and

[commit-bot: I haz the power, 2017-04-03 10:56:26]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[kolos1, 2017-04-03 11:00:39]

The CQ bit was unchecked by kolos@chromium.org

[Eugene But (OOO till 7-30), 2017-04-03 16:53:21]

lgtm

[stgao, 2017-04-25 17:51:21]

Description was changed from

==========
Revert of Introduce InterfaceEndpointClient(IEC), InterfaceEndpointHandle and
(patchset #14 id:260001 of https://codereview.chromium.org/2744963002/ )

Reason for revert:
This CL makes BluetoothInternalsTest.Startup_BluetoothInternals flaky. See
FindIt report
https://findit-for-me.appspot.com/waterfall/failure?url=https%3A%2F%2Fbuild.c...

Also check details in the bug.
BUG=707725

Original issue's description:
> Introduce InterfaceEndpointClient(IEC), InterfaceEndpointHandle and
> PipeControlMessage Handler/Proxy. Move accept message and handling code from
> Router to IEC. There is still only 1 interface on a message pipe, but this
> work helps setup for associated interfaces.
> 
> BUG=695635
> 
> Review-Url: https://codereview.chromium.org/2744963002
> Cr-Commit-Position: refs/heads/master@{#460817}
> Committed:
https://chromium.googlesource.com/chromium/src/+/087549eb773ef4b5fd43b5bd57f1...

TBR=rockot@chromium.org,eugenebut@chromium.org,jam@chromium.org,yzshen@chromi...
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=695635
==========

to

==========
Revert of Introduce InterfaceEndpointClient(IEC), InterfaceEndpointHandle and
(patchset #14 id:260001 of https://codereview.chromium.org/2744963002/ )

Reason for revert:
This CL makes BluetoothInternalsTest.Startup_BluetoothInternals flaky. See
FindIt report
https://findit-for-me.appspot.com/waterfall/failure?url=https%3A%2F%2Fbuild.c...

Also check details in the bug.
BUG=707725

Original issue's description:
> Introduce InterfaceEndpointClient(IEC), InterfaceEndpointHandle and
> PipeControlMessage Handler/Proxy. Move accept message and handling code from
> Router to IEC. There is still only 1 interface on a message pipe, but this
> work helps setup for associated interfaces.
> 
> BUG=695635
> 
> Review-Url: https://codereview.chromium.org/2744963002
> Cr-Commit-Position: refs/heads/master@{#460817}
> Committed:
https://chromium.googlesource.com/chromium/src/+/087549eb773ef4b5fd43b5bd57f1...

TBR=rockot@chromium.org,eugenebut@chromium.org,jam@chromium.org,yzshen@chromi...
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=695635
==========