Files.app: Keep the background color of top buttons as pressed until it is released.

Files.app: Keep the background color of top buttons as pressed until it is released.

When the button is in the state of 'active', the shadow effect that makes button
look as pressed is enabled. And originally when the buttons is in the state of
'hover' or in the state of 'focused', the background color is changed.

But some drag operation let the button's state be 'active' but not 'hover' and
not 'focused'. This cause the situation the shadow effect is enabled but the
background color is not changed.

This CL updateds the CSS selector and when the button is in the state of
'active' as well as original condition, the background color is changed.

BUG=243287
TEST=manually
R=yoshiki@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=201987

[hirono, 2013-05-23 13:26:37]

Could you check this tiny CL?
Thank you very much!

[yoshiki, 2013-05-23 14:31:44]

lgtm

[commit-bot: I haz the power, 2013-05-24 00:09:34]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/hirono@chromium.org/15873002/1

[hirono, 2013-05-24 06:41:39]

Committed patchset #1 manually as r201987 (presubmit successful).