Revert "Roll Clang 223108:230914"

Revert "Roll Clang 223108:230914"

It seems the roll broke Android tests, see crbug.com/463436.

Also, fix common.gypi to add a dependency on the Clang version when
host_clang is set. We think this might be the reason the breakage
didn't show on trybots when the roll landed: the host binaries
weren't recompiled with the new Clang version.

BUG=444089, 463436
NOTRY=true
NOPRESUBMIT=true
TBR=jln, jbauman

Committed: https://crrev.com/365c5588df97683350ceabef4d8034c0d3faec78
Cr-Commit-Position: refs/heads/master@{#318940}

[hans, 2015-03-03 21:02:33]

hans@chromium.org changed reviewers:
+ thakis@chromium.org

[hans, 2015-03-03 21:02:34]

PTAL.

[Nico, 2015-03-03 21:05:06]

lgtm, thanks

[hans, 2015-03-03 21:07:37]

The CQ bit was checked by hans@chromium.org

[commit-bot: I haz the power, 2015-03-03 21:08:40]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/976833002/1

[commit-bot: I haz the power, 2015-03-03 21:09:47]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-03 21:10:23]

Patchset 1 (id:??) landed as
https://crrev.com/365c5588df97683350ceabef4d8034c0d3faec78
Cr-Commit-Position: refs/heads/master@{#318940}