Remove Perl cruft from IDL compiler front end (mostly JSON export)

Remove Perl cruft from IDL compiler front end (mostly JSON export)

Mostly just remove code: net -190 lines
(also group type classes together, and replace some None with False)

Further simplification is possible, as we no longer need classes for
enums and unions; will do in followup, b/c more involved.

BUG=345137
TBR=haraken

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=168470

[Nils Barth (inactive), 2014-03-04 00:35:44]

The CQ bit was checked by nbarth@chromium.org

[commit-bot: I haz the power, 2014-03-04 00:35:58]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/nbarth@chromium.org/185303013/1

[haraken, 2014-03-04 00:38:15]

LGTM

[Nils Barth (inactive), 2014-03-04 08:51:29]

The CQ bit was unchecked by nbarth@chromium.org

[Nils Barth (inactive), 2014-03-04 08:51:36]

The CQ bit was checked by nbarth@chromium.org

[Nils Barth (inactive), 2014-03-05 01:44:44]

The CQ bit was unchecked by nbarth@chromium.org

[Nils Barth (inactive), 2014-03-05 01:44:45]

The CQ bit was checked by nbarth@chromium.org

[Nils Barth (inactive), 2014-03-05 11:58:31]

The CQ bit was unchecked by nbarth@chromium.org

[Nils Barth (inactive), 2014-03-05 11:58:35]

The CQ bit was checked by nbarth@chromium.org

[commit-bot: I haz the power, 2014-03-05 11:59:21]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/nbarth@chromium.org/185303013/1

[commit-bot: I haz the power, 2014-03-05 11:59:50]

Change committed as 168470