Revert of Implement ui::ClipboardMus.

Revert of Implement ui::ClipboardMus. (patchset #23 id:440001 of https://codereview.chromium.org/2011833003/ )

Reason for revert:
Broke Win x64 (dbg) due to size_t -> int conversion.

Original issue's description:
> Implement ui::ClipboardMus.
>
> This lets chrome in mash read and write from the mus server's clipboard.
>
> BUG=581460
>
> Committed: https://crrev.com/bbc764eb7a7c1937d26f43f6087604ebc2d048ad
> Cr-Commit-Position: refs/heads/master@{#398351}

TBR=dcheng@chromium.org,brettw@chromium.org,sky@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=581460
Committed: https://crrev.com/940233aa4b7bd90b5423fa4daef22e35a81bed8d
Cr-Commit-Position: refs/heads/master@{#398365}

[Elliot Glaysher, 2016-06-07 19:21:56]

The CQ bit was checked by erg@chromium.org

[Elliot Glaysher, 2016-06-07 19:21:57]

Created Revert of Implement ui::ClipboardMus.

[commit-bot: I haz the power, 2016-06-07 19:32:03]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2047703003/1

[commit-bot: I haz the power, 2016-06-07 19:33:51]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-06-07 19:35:19]

Description was changed from

==========
Revert of Implement ui::ClipboardMus. (patchset #23 id:440001 of
https://codereview.chromium.org/2011833003/ )

Reason for revert:
Broke Win x64 (dbg) due to size_t -> int conversion.

Original issue's description:
> Implement ui::ClipboardMus.
> 
> This lets chrome in mash read and write from the mus server's clipboard.
> 
> BUG=581460
> 
> Committed: https://crrev.com/bbc764eb7a7c1937d26f43f6087604ebc2d048ad
> Cr-Commit-Position: refs/heads/master@{#398351}

TBR=dcheng@chromium.org,brettw@chromium.org,sky@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=581460
==========

to

==========
Revert of Implement ui::ClipboardMus. (patchset #23 id:440001 of
https://codereview.chromium.org/2011833003/ )

Reason for revert:
Broke Win x64 (dbg) due to size_t -> int conversion.

Original issue's description:
> Implement ui::ClipboardMus.
>
> This lets chrome in mash read and write from the mus server's clipboard.
>
> BUG=581460
>
> Committed: https://crrev.com/bbc764eb7a7c1937d26f43f6087604ebc2d048ad
> Cr-Commit-Position: refs/heads/master@{#398351}

TBR=dcheng@chromium.org,brettw@chromium.org,sky@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=581460

Committed: https://crrev.com/940233aa4b7bd90b5423fa4daef22e35a81bed8d
Cr-Commit-Position: refs/heads/master@{#398365}
==========

[commit-bot: I haz the power, 2016-06-07 19:35:21]

Patchset 1 (id:??) landed as
https://crrev.com/940233aa4b7bd90b5423fa4daef22e35a81bed8d
Cr-Commit-Position: refs/heads/master@{#398365}