Revert of Output closure-compiled JavaScript files

Revert of Output closure-compiled JavaScript files (patchset #10 id:180001 of https://codereview.chromium.org/958383003/)

Reason for revert:
Likely broke the build, e.g.
http://build.chromium.org/p/chromium/buildstatus?builder=Linux&number=59264
http://build.chromium.org/p/chromium.mac/buildstatus?builder=Mac%20Builder&number=18925
http://build.chromium.org/p/chromium.linux/buildstatus?builder=Linux%20Builder%20%28dbg%29%2832%29&number=34383

Original issue's description:
> Output closure-compiled JavaScript files
>
> If generate_output is set, chcker.py adds compiler flags to actually
> output the compiled JS. It will also output a source map if the build
> is Debug.
>
> BUG=393874
>
> Committed: https://crrev.com/b7f849b027b42917a032dca4f2467db357fa26a4
> Cr-Commit-Position: refs/heads/master@{#319637}

TBR=dbeam@chromium.org,twellington@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=393874
Committed: https://crrev.com/30fc31d16b0d87a21ef7f66f4bd676245180a719
Cr-Commit-Position: refs/heads/master@{#319639}

[Marc Treib, 2015-03-09 15:50:22]

Created Revert of Output closure-compiled JavaScript files

[commit-bot: I haz the power, 2015-03-09 15:50:54]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/989253003/1

[commit-bot: I haz the power, 2015-03-09 15:51:37]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-09 15:52:02]

Patchset 1 (id:??) landed as
https://crrev.com/30fc31d16b0d87a21ef7f66f4bd676245180a719
Cr-Commit-Position: refs/heads/master@{#319639}