Split generate_event_interfaces.py from compute_interfaces_info.py

Split generate_event_interfaces.py from compute_interfaces_info.py

This is the last step in factoring compute_interfaces_info:
EventInterfaces.in is a simple auxiliary file that's largely unrelated to
bindings.
Splitting it out means compute_interfaces_info now purely computes interfaces
info!
This means we can reuse it without needing dummy files (e.g., in r-b-t and in
gyp), and also simplifies its code.

We can actually simplify both scripts (and r-b-t) further,
but this is a conservative CL, just splitting it out.

BUG=341748
R=haraken

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=168499

[Nils Barth (inactive), 2014-03-03 05:51:31]

Last step of factoring compute_interfaces_info.
(Unlike the generate_global_constructors,
this time I'm *starting* with the conservative,
only-split-the-script CL ;)

[haraken, 2014-03-03 06:05:49]

LGTM

[Nils Barth (inactive), 2014-03-03 23:45:47]

The CQ bit was checked by nbarth@chromium.org

[commit-bot: I haz the power, 2014-03-03 23:46:11]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/nbarth@chromium.org/185303008/1

[Nils Barth (inactive), 2014-03-04 08:51:25]

The CQ bit was unchecked by nbarth@chromium.org

[Nils Barth (inactive), 2014-03-04 08:51:33]

The CQ bit was checked by nbarth@chromium.org

[commit-bot: I haz the power, 2014-03-04 15:27:20]

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

[commit-bot: I haz the power, 2014-03-04 15:27:20]

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

[Nils Barth (inactive), 2014-03-05 01:44:37]

The CQ bit was checked by nbarth@chromium.org

[commit-bot: I haz the power, 2014-03-05 01:46:31]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/nbarth@chromium.org/185303008/1

[Nils Barth (inactive), 2014-03-05 11:58:18]

The CQ bit was unchecked by nbarth@chromium.org

[Nils Barth (inactive), 2014-03-05 11:58:24]

The CQ bit was checked by nbarth@chromium.org

[commit-bot: I haz the power, 2014-03-05 17:53:47]

Change committed as 168499