Revert of Eliminate ChildThread InterfaceRegistry.

Revert of Eliminate ChildThread InterfaceRegistry. (patchset #8 id:140001 of https://codereview.chromium.org/2820883002/ )

Reason for revert:
Looks like it might be causing ContentBrowserTest.BrowserCrashCallStack time-out on "Linux ChromiumOS Tests (dbg)" bot (also "Linux Tests (dbg)") consistently.

Original issue's description:
> Eliminate ChildThread InterfaceRegistry.
> 
> Eliminate ChildThread InterfaceRegistry. Also cleans up ServiceManagerConnectionImpl::IOThreadContext::OnBindInterface().
> 
> R=rockot@chromium.org
> 
> Review-Url: https://codereview.chromium.org/2820883002
> Cr-Commit-Position: refs/heads/master@{#466851}
> Committed: https://chromium.googlesource.com/chromium/src/+/92072b3d9f87ffe78a4e977dd85db597452caa92

TBR=rockot@chromium.org,ben@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review-Url: https://codereview.chromium.org/2836813006
Cr-Commit-Position: refs/heads/master@{#466948}
Committed: https://chromium.googlesource.com/chromium/src/+/2aa1a170c5f8709ce1e1fde42cf49c76d4e24a9c

[pkalinnikov, 2017-04-25 12:05:13]

The CQ bit was checked by pkalinnikov@chromium.org

[pkalinnikov, 2017-04-25 12:05:14]

Created Revert of Eliminate ChildThread InterfaceRegistry.

[commit-bot: I haz the power, 2017-04-25 12:05:28]

CQ is trying da patch.

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

[commit-bot: I haz the power, 2017-04-25 12:05:56]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1493121913900920, "parent_rev":
"0dbb630385d7bd387348b00437e72b611287cb49", "commit_rev":
"2aa1a170c5f8709ce1e1fde42cf49c76d4e24a9c"}

[commit-bot: I haz the power, 2017-04-25 12:06:11]

Description was changed from

==========
Revert of Eliminate ChildThread InterfaceRegistry. (patchset #8 id:140001 of
https://codereview.chromium.org/2820883002/ )

Reason for revert:
Looks like it might be causing ContentBrowserTest.BrowserCrashCallStack time-out
on "Linux ChromiumOS Tests (dbg)" bot (also "Linux Tests (dbg)") consistently.

Original issue's description:
> Eliminate ChildThread InterfaceRegistry.
> 
> Eliminate ChildThread InterfaceRegistry. Also cleans up
ServiceManagerConnectionImpl::IOThreadContext::OnBindInterface().
> 
> R=rockot@chromium.org
> 
> Review-Url: https://codereview.chromium.org/2820883002
> Cr-Commit-Position: refs/heads/master@{#466851}
> Committed:
https://chromium.googlesource.com/chromium/src/+/92072b3d9f87ffe78a4e977dd85d...

TBR=rockot@chromium.org,ben@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
==========

to

==========
Revert of Eliminate ChildThread InterfaceRegistry. (patchset #8 id:140001 of
https://codereview.chromium.org/2820883002/ )

Reason for revert:
Looks like it might be causing ContentBrowserTest.BrowserCrashCallStack time-out
on "Linux ChromiumOS Tests (dbg)" bot (also "Linux Tests (dbg)") consistently.

Original issue's description:
> Eliminate ChildThread InterfaceRegistry.
> 
> Eliminate ChildThread InterfaceRegistry. Also cleans up
ServiceManagerConnectionImpl::IOThreadContext::OnBindInterface().
> 
> R=rockot@chromium.org
> 
> Review-Url: https://codereview.chromium.org/2820883002
> Cr-Commit-Position: refs/heads/master@{#466851}
> Committed:
https://chromium.googlesource.com/chromium/src/+/92072b3d9f87ffe78a4e977dd85d...

TBR=rockot@chromium.org,ben@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review-Url: https://codereview.chromium.org/2836813006
Cr-Commit-Position: refs/heads/master@{#466948}
Committed:
https://chromium.googlesource.com/chromium/src/+/2aa1a170c5f8709ce1e1fde42cf4...
==========

[commit-bot: I haz the power, 2017-04-25 12:06:12]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/2aa1a170c5f8709ce1e1fde42cf4...

[pkalinnikov, 2017-04-25 14:15:41]

FIY: This revert helped to make the bots happy.