Remove debugging code which affects behavior in stable in FrameCaptionButtonContainerView

Remove debugging code which affects behavior in stable in FrameCaptionButtonContainerView

Remove 'feature' where the animations get slowed down when a user clicks one of
the window controls (minimize, maximize, close) while holding shift. This is
intended for debugging only but affects behavior in stable too

BUG=None
TEST=None

Committed: https://crrev.com/f233c99e57076f6c5604fc5ccb5474204c83a5d8
Cr-Commit-Position: refs/heads/master@{#296023}

[pkotwicz, 2014-09-20 02:19:55]

pkotwicz@chromium.org changed reviewers:
+ oshima@chromium.org

[pkotwicz, 2014-09-20 02:33:15]

Oshima, can you please take a look?

I do not think that this debugging feature is used by anyone.
I also think that it is generally bad for us to have 'debugging easter eggs' in
stable. (To my knowledge the "Do a barrel roll" accelerator is the only intended
easter egg in production)

[oshima, 2014-09-22 17:05:15]

lgtm

[pkotwicz, 2014-09-22 18:12:50]

The CQ bit was checked by pkotwicz@chromium.org

[commit-bot: I haz the power, 2014-09-22 18:14:00]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/586813004/1

[commit-bot: I haz the power, 2014-09-22 19:09:48]

Committed patchset #1 (id:1) as 0aa657f620bb0df69cd10a70df3f7c9dc1654418

[commit-bot: I haz the power, 2014-09-22 19:10:22]

Patchset 1 (id:??) landed as
https://crrev.com/f233c99e57076f6c5604fc5ccb5474204c83a5d8
Cr-Commit-Position: refs/heads/master@{#296023}