Revert of Add the ability to build Chrome tools to the Win Clang build script.

Revert of Add the ability to build Chrome tools to the Win Clang build script. (patchset #3 id:40001 of https://codereview.chromium.org/1068603002/)

Reason for revert:
Still breaks clang/win bots: http://build.chromium.org/p/chromium.fyi/builders/CrWinClang/builds/279

Original issue's description:
> Add the ability to build Chrome tools to the Win Clang build script.
>
> BUG=424436, 467287
>
> Committed: https://crrev.com/475949d9430b6a759ce759f2133dd3a1577d0d0b
> Cr-Commit-Position: refs/heads/master@{#324089}
>
> Committed: https://crrev.com/8caa594c291b6dd3e35d60a886ef33b36ae78e97
> Cr-Commit-Position: refs/heads/master@{#324164}

TBR=hans@chromium.org,dcheng@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=424436, 467287
Committed: https://crrev.com/615d79986581d6cfbcc25d805b15483603dd5c40
Cr-Commit-Position: refs/heads/master@{#324178}

[Nico, 2015-04-08 02:31:58]

Created Revert of Add the ability to build Chrome tools to the Win Clang build
script.

[commit-bot: I haz the power, 2015-04-08 02:32:16]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1070523002/1

[commit-bot: I haz the power, 2015-04-08 02:33:05]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-04-08 02:34:30]

Patchset 1 (id:??) landed as
https://crrev.com/615d79986581d6cfbcc25d805b15483603dd5c40
Cr-Commit-Position: refs/heads/master@{#324178}