Use the outermost float for shape-outside

Use the outermost float for shape-outside

Shape outside was using the last float encountered on the line, assuming it
would always be the outermost float. However, this is not necessarily true, so
switch to using the outermost float. This has the advantage of also only
needing one saved float when computing the offset, not two.

BUG=271774
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=156038

[Bem Jones-Bey (adobe), 2013-08-13 17:16:43]

More float code cleanup, but this has a minor behavior change for shape-outside.

[eseidel, 2013-08-13 17:36:38]

lgtm

Are we going to change the spec too? :)

[commit-bot: I haz the power, 2013-08-13 17:36:54]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/bjonesbe@adobe.com/23084002/9001

[Bem Jones-Bey (adobe), 2013-08-13 17:42:07]

On 2013/08/13 17:36:38, eseidel wrote:
> lgtm
> 
> Are we going to change the spec too? :)

I answered out of band, but just for posterity, yup. In fact, there are more
changes that will be needed.

[commit-bot: I haz the power, 2013-08-13 18:48:24]

Change committed as 156038