Remove CSS Grid Layout and grid media queries.

Remove CSS Grid Layout and grid media queries.

The two are unrelated, but it was easier to just grep for grid
and remove them all. Aside from the media query change, there
isn't any change in behavior since grid was behind a flag.

R=esprehn@chromium.org

Committed: https://chromium.googlesource.com/external/mojo/+/4504b4614d8c3038551c982ac3f6b335bf82577f

[ojan, 2014-10-31 23:28:50]

ojan@chromium.org changed reviewers:
+ abarth@chromium.org, eseidel@chromium.org, esprehn@chromium.org

[esprehn, 2014-10-31 23:36:33]

lgtm

[ojan, 2014-10-31 23:40:08]

Committed patchset #1 (id:1) manually as
4504b4614d8c3038551c982ac3f6b335bf82577f.

[eseidel, 2014-10-31 23:57:55]

So flexbox is our only layout model?

[ojan, 2014-11-01 00:30:55]

On 2014/10/31 at 23:57:55, eseidel wrote:
> So flexbox is our only layout model?

flex, inline and block for now. We'll add back some sort of grid-like thing in
the future, but not until we figure out how we want to do layout in general
(e.g. in JS or not).