Reland of move javaEnabled setting.

Reland of move javaEnabled setting. (patchset #1 id:1 of https://codereview.chromium.org/1318703002/ )

Reason for revert:
Relanding because this had no impact. The bug disappeared and re-appeared regardless of this CL.

Original issue's description:
> Revert of Remove javaEnabled setting. (patchset #1 id:1 of https://codereview.chromium.org/1306403003/ )
> 
> Reason for revert:
> Reverting to see whether this fixes the compilation.
> 
> Original issue's description:
> > Remove javaEnabled setting.
> > 
> > As of M45, NPAPI support is (almost) completely gone, so Java will never
> > be supported anyway.
> > 
> > BUG=none
> > 
> > Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=201211
> 
> TBR=haraken@chromium.org,dcheng@chromium.org
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=none
> 
> Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=201217

TBR=haraken@chromium.org,dcheng@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=none

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=201218

[battre, 2015-08-26 09:10:43]

Created Reland of move javaEnabled setting.

[commit-bot: I haz the power, 2015-08-26 09:10:48]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1319673003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1319673003/1

[commit-bot: I haz the power, 2015-08-26 09:11:15]

Committed patchset #1 (id:1) as
https://src.chromium.org/viewvc/blink?view=rev&revision=201218

[haraken, 2015-08-26 09:12:52]

LGTM