Revert of base: Fix/add header #ifndef guards.

Revert of base: Fix/add header #ifndef guards. (patchset #2 id:20001 of https://codereview.chromium.org/985003004/)

Reason for revert:
This seems to be causing tree closing compile failure https://build.chromium.org/p/chromium/builders/Android/builds/36135/steps/compile/logs/stdio.

Original issue's description:
> base: Fix/add header #ifndef guards.
>
> Header guards should be defined based on the path and file name of the
> header file. Some headers have it wrong, some are missing the guards,
> and some just have the matching comment wrong.
>
> R=Nico
> BUG=464816
>
> Committed: https://crrev.com/301b392761fd8f66f3a701ab1dd011c6e7a55e19
> Cr-Commit-Position: refs/heads/master@{#319722}

TBR=thakis@chromium.org,danakj@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=464816
Committed: https://crrev.com/2220bd6553b4aae764ed66b24f5aa6e398c70b68
Cr-Commit-Position: refs/heads/master@{#319728}

[Bence, 2015-03-09 20:44:02]

Created Revert of base: Fix/add header #ifndef guards.

[commit-bot: I haz the power, 2015-03-09 20:44:20]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/989343002/1

[commit-bot: I haz the power, 2015-03-09 20:47:52]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-09 20:49:54]

Patchset 1 (id:??) landed as
https://crrev.com/2220bd6553b4aae764ed66b24f5aa6e398c70b68
Cr-Commit-Position: refs/heads/master@{#319728}