Revert of Pass Surface ID namespace to renderer compositors.

Revert of Pass Surface ID namespace to renderer compositors. (patchset #4 id:60001 of https://codereview.chromium.org/1129883003/)

Reason for revert:
Speculative revert to address widespread blink layout test failures on mac following a chromium revision in range 329707-329709.

https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Mac10.9%20%28retina%29/builds/655

No stacks but sample output:

STDERR: Assertion failed: (impl_.get() != nullptr), function operator->, file ../../base/memory/scoped_ptr.h, line 386.

We'll try reproducing locally and watch the bots. We can reland if this does not green up the webkit waterfall.

Original issue's description:
> Pass Surface ID namespace to renderer compositors.
>
> In order to enable renderer processes to create SurfaceSequences, they
> have to receive Surface ID namespaces from the browser process so that
> they can avoid collisions.
>
> BUG=478802
>
> Committed: https://crrev.com/c7a5afd66499fc8442e1b3146f55b227638934d8
> Cr-Commit-Position: refs/heads/master@{#329708}

TBR=jbauman@chromium.org,nasko@chromium.org,kenrb@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=478802
Committed: https://crrev.com/c3ab203e6cd01a5bc2a125d1667e80a5a7f60c99
Cr-Commit-Position: refs/heads/master@{#329736}

[jsbell, 2015-05-13 22:23:48]

Created Revert of Pass Surface ID namespace to renderer compositors.

[commit-bot: I haz the power, 2015-05-13 22:25:12]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1131673009/1

[commit-bot: I haz the power, 2015-05-13 22:26:57]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-05-13 22:27:43]

Patchset 1 (id:??) landed as
https://crrev.com/c3ab203e6cd01a5bc2a125d1667e80a5a7f60c99
Cr-Commit-Position: refs/heads/master@{#329736}