Remove page/EventHandler.* and fix core.gypi

Remove page/EventHandler.* and fix core.gypi

EventHandler.cpp and .h have been copied by crrev.com/1148813007 from
page directory to input directory, and those in page remain. This CL
removes those in page and fixes core.gypi.

BUG=496757
TEST=n/a

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=196649

[hajimehoshi, 2015-06-08 04:45:48]

hajimehoshi@chromium.org changed reviewers:
+ tkent@chromium.org

[hajimehoshi, 2015-06-08 04:45:48]

PTAL

[kochi, 2015-06-08 04:47:46]

kochi@chromium.org changed reviewers:
+ kochi@chromium.org

[kochi, 2015-06-08 04:47:47]

lgtm

[tkent, 2015-06-08 04:50:17]

lgtm

[hajimehoshi, 2015-06-08 05:24:08]

The CQ bit was checked by hajimehoshi@chromium.org

[commit-bot: I haz the power, 2015-06-08 05:24:11]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1153723010/1

[commit-bot: I haz the power, 2015-06-08 05:43:14]

Committed patchset #1 (id:1) as
https://src.chromium.org/viewvc/blink?view=rev&revision=196649

[Rick Byers, 2015-06-08 14:02:44]

On 2015/06/08 05:43:14, commit-bot: I haz the power wrote:
> Committed patchset #1 (id:1) as
> https://src.chromium.org/viewvc/blink?view=rev&revision=196649

Thank you very much for quickly fixing this!  We obviously should have caught
these issues in the original CL, sorry!

[lanwei, 2015-06-08 15:31:29]

On 2015/06/08 14:02:44, Rick Byers wrote:
> On 2015/06/08 05:43:14, commit-bot: I haz the power wrote:
> > Committed patchset #1 (id:1) as
> > https://src.chromium.org/viewvc/blink?view=rev&revision=196649
> 
> Thank you very much for quickly fixing this!  We obviously should have caught
> these issues in the original CL, sorry!

Thank you very much for fixing my mistake, and I am very sorry about it.

[hajimehoshi, 2015-06-10 04:41:48]

On 2015/06/08 15:31:29, lanwei wrote:
> On 2015/06/08 14:02:44, Rick Byers wrote:
> > On 2015/06/08 05:43:14, commit-bot: I haz the power wrote:
> > > Committed patchset #1 (id:1) as
> > > https://src.chromium.org/viewvc/blink?view=rev&revision=196649
> > 
> > Thank you very much for quickly fixing this!  We obviously should have
caught
> > these issues in the original CL, sorry!
> 
> Thank you very much for fixing my mistake, and I am very sorry about it.

No problem :-)