Drop PerWorldBindings for the on* event handler IDL attributes

Drop PerWorldBindings for the on* event handler IDL attributes

PerWorldBindings is applied inconsistently for these attributes,
so simply drop it to reduce the differences in preparation for
GlobalEventHandlers.

BUG=305112
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=159511

[abarth-chromium, 2013-10-11 19:33:35]

On 2013/10/11 19:24:19, philipj wrote:

Lgtm

[commit-bot: I haz the power, 2013-10-11 19:35:51]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/philipj@opera.com/26535005/1

[commit-bot: I haz the power, 2013-10-11 19:55:36]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/philipj@opera.com/26535005/13001

[commit-bot: I haz the power, 2013-10-11 23:57:45]

Retried try job too often on win_blink_rel for step(s) webkit_tests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=win_blink_...

[commit-bot: I haz the power, 2013-10-12 08:08:40]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/philipj@opera.com/26535005/26001

[commit-bot: I haz the power, 2013-10-12 09:29:11]

Retried try job too often on win_blink_rel for step(s) webkit_tests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=win_blink_...

[commit-bot: I haz the power, 2013-10-12 09:34:11]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/philipj@opera.com/26535005/26001

[commit-bot: I haz the power, 2013-10-12 13:21:53]

Change committed as 159511