Remove unused feature HTMLAppletElementLegacyCall

Remove unused feature HTMLAppletElementLegacyCall

Intent to Remove:
https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/MuxvaXiyBxU

BUG=339919
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=185204

[Sunil Ratnu, 2014-11-12 08:46:20]

sunil.ratnu@samsung.com changed reviewers:
+ abarth@chromium.org, haraken@chromium.org

[Sunil Ratnu, 2014-11-12 08:46:21]

Please review this.

Thanks!
Sunil

[haraken, 2014-11-12 08:57:50]

LGTM

[Sunil Ratnu, 2014-11-12 09:10:14]

The CQ bit was checked by sunil.ratnu@samsung.com

[commit-bot: I haz the power, 2014-11-12 09:10:44]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/719013002/1

[commit-bot: I haz the power, 2014-11-12 11:27:13]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-11-12 11:27:14]

Try jobs failed on following builders:
  win_blink_rel on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/win_blink_rel/builds/36033)

[Sunil Ratnu, 2014-11-12 12:09:54]

The CQ bit was checked by sunil.ratnu@samsung.com

[commit-bot: I haz the power, 2014-11-12 12:10:20]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/719013002/1

[commit-bot: I haz the power, 2014-11-12 12:53:15]

Committed patchset #1 (id:1) as 185204