Use ButtonCompat to get Material-y buttons in more places.

Use ButtonCompat to get Material-y buttons in more places.

ButtonCompat is now used in settings, on the sad tab page, in infobars,
and in the website settings popup. Various old button styles can be
removed as a happy result of this.

This also updates ButtonCompat to style disabled buttons appropriately.

Committed: https://crrev.com/3782bc8d618d8f4a3de3592e0a860fab28055521
Cr-Commit-Position: refs/heads/master@{#315709}

[newt (away), 2015-02-11 01:18:01]

newt@chromium.org changed reviewers:
+ aurimas@chromium.org

[newt (away), 2015-02-11 01:18:02]

PTAL

[aurimas (slooooooooow), 2015-02-11 01:29:49]

lgtm

[newt (away), 2015-02-11 01:30:12]

The CQ bit was checked by newt@chromium.org

[commit-bot: I haz the power, 2015-02-11 01:31:19]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/914003002/1

[commit-bot: I haz the power, 2015-02-11 02:06:19]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-02-11 02:06:50]

Patchset 1 (id:??) landed as
https://crrev.com/3782bc8d618d8f4a3de3592e0a860fab28055521
Cr-Commit-Position: refs/heads/master@{#315709}