Don't constrain the size of the cue root

Don't constrain the size of the cue root

Since the 'text track container' is enclosed by the overlay enclosure, it
is affected by the max-width in the matching UA style rule. This means
that the cue root can never be wider than 800px.
Remove the 'max-width' property from this rule entirely. The only other
side-effect from this is that the cast button (when visible) will now be
positioned at <5%,5%> within the <video> content rectangle.

BUG=447161
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=188163

[fs, 2015-01-09 12:42:16]

fs@opera.com changed reviewers:
+ aberent@chromium.org, philipj@opera.com

[fs, 2015-01-09 14:36:09]

This has the side-effect that the overlay cast button is moved to the "actual"
corner of the video content box, rather than the "constrained" box. Beyond that
I don't see anything that should be affected.

@aberent: Was positioning like that intentional?

(If yes I think this will need more surgery - something I might do anyway,
because the setup of the "overlays" seem a bit weird to me TBH - I think I
rather just have them last and individually abs.posed against the video
viewport/content box, and make the track container a sibling of the
panel-enclosure [again].)

[philipj_slow, 2015-01-09 14:47:26]

LGTM, this looks like a copy-paste issue originally, not sure why max-width
would make sense here.

[fs, 2015-01-09 15:10:59]

On 2015/01/09 14:47:26, philipj wrote:
> ..., this looks like a copy-paste issue originally, not sure why max-width
> would make sense here.

Yes, I suspect that too, but I've not found sufficient evidence to corroborate
that =). There appear to be quite a bit of copy-paste/redundancies/etc. in this
style-sheet...

[fs, 2015-01-09 18:07:21]

The CQ bit was checked by fs@opera.com

[commit-bot: I haz the power, 2015-01-09 18:08:10]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/846633002/1

[commit-bot: I haz the power, 2015-01-09 18:11:26]

Committed patchset #1 (id:1) as
https://src.chromium.org/viewvc/blink?view=rev&revision=188163