Revert of Mandoline UI Process: Update namespaces and file names

Revert of Mandoline UI Process: Update namespaces and file names (patchset #9 id:150001 of https://codereview.chromium.org/1340983002/ )

Reason for revert:
Speculative, might've broken mojo_apptests on http://build.chromium.org/p/chromium.linux/builders/Linux%20GN/builds/32066

Original issue's description:
> Mandoline UI Process: Update namespaces and file names
>
> This CL updates namespaces in components/mus to mus from mojo, surfaces, gles2, and view_manager.
>
> BUG=531533
> TBR=jam@chromium.org for trivial pdf_viewer change.
>
> Committed: https://crrev.com/49b0d73f3ebb4801fc518751145504af3a2f70ed
> Cr-Commit-Position: refs/heads/master@{#349229}

TBR=sky@chromium.org,fsamuel@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=531533
Committed: https://crrev.com/35b19f7d5d7b7b68878d6c766e93e148f8b06998
Cr-Commit-Position: refs/heads/master@{#349332}

[Nico, 2015-09-17 02:46:31]

Created Revert of Mandoline UI Process: Update namespaces and file names

[commit-bot: I haz the power, 2015-09-17 02:47:08]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1351013002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1351013002/1

[commit-bot: I haz the power, 2015-09-17 02:48:56]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-09-17 02:49:35]

Patchset 1 (id:??) landed as
https://crrev.com/35b19f7d5d7b7b68878d6c766e93e148f8b06998
Cr-Commit-Position: refs/heads/master@{#349332}