chromeos: Remove user pod container height animation.

chromeos: Remove user pod container height animation.

This removes an animation that adds a bit of jank at
startup.  It doesn't have a significant effect on boot time
in either direction, from my measurements.

BUG=chromium-os:26210
TEST=manual: booted and checked that animation is gone


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=124760

[Nikita (slow), 2012-03-02 16:22:06]

lgtm

Yes, removing this one makes sense. It adds jank on boot even on stumpy/lumpy.
Perhaps css animation would look fine with accelerated compositing on (if that
happens for login screen at some point).

[Daniel Erat, 2012-03-02 16:24:20]

On 2012/03/02 16:22:06, Nikita Kostylev wrote:
> lgtm
> 
> Yes, removing this one makes sense. It adds jank on boot even on stumpy/lumpy.
> Perhaps css animation would look fine with accelerated compositing on (if that
> happens for login screen at some point).

Thanks.  I think that waiting until all of the user images have been loaded to
start animations would also help here (although it'd delay startup a bit, which
we might not be willing to do).

[commit-bot: I haz the power, 2012-03-02 20:57:46]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/derat@chromium.org/9568044/4001

[commit-bot: I haz the power, 2012-03-02 23:05:12]

Change committed as 124760

[Nikita (slow), 2012-03-05 09:19:41]

Sorry, forgot to send out this one.
Never mind, per-file history is enough.

http://codereview.chromium.org/9568044/diff/1/chrome/browser/resources/chrome...
File chrome/browser/resources/chromeos/login/oobe.css (left):

http://codereview.chromium.org/9568044/diff/1/chrome/browser/resources/chrome...
chrome/browser/resources/chromeos/login/oobe.css:42: -webkit-transition: height
200ms ease-in-out;
Makes sense to comment that with a bug #(18307)?