De-virtualize media control painting methods

De-virtualize media control painting methods

They have the same implementations for all ThemePainter classes.

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=194792

[Xianzhu, 2015-04-30 17:24:48]

wangxianzhu@chromium.org changed reviewers:
+ chrishtr@chromium.org, pdr@chromium.org

[Xianzhu, 2015-04-30 17:24:49]

**This is based on https://codereview.chromium.org/1102353008/**.

[pdr., 2015-04-30 17:29:10]

The CQ bit was checked by pdr@chromium.org

[pdr., 2015-04-30 17:29:11]

lgtm

[commit-bot: I haz the power, 2015-04-30 17:29:29]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1115203003/1

[Xianzhu, 2015-04-30 17:29:45]

The CQ bit was unchecked by wangxianzhu@chromium.org

[Xianzhu, 2015-04-30 17:30:09]

Not CQ-able for now.  Must be after https://codereview.chromium.org/1102353008/.

[Xianzhu, 2015-05-01 01:12:42]

The CQ bit was checked by wangxianzhu@chromium.org

[commit-bot: I haz the power, 2015-05-01 01:12:59]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1115203003/1

[Xianzhu, 2015-05-01 03:42:34]

The CQ bit was checked by wangxianzhu@chromium.org

[Xianzhu, 2015-05-01 03:42:34]

The patchset sent to the CQ was uploaded after l-g-t-m from pdr@chromium.org
Link to the patchset: https://codereview.chromium.org/1115203003/#ps20001
(title: "Mac doesn't want cast button")

[commit-bot: I haz the power, 2015-05-01 03:42:42]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1115203003/20001

[commit-bot: I haz the power, 2015-05-01 07:30:44]

Committed patchset #2 (id:20001) as
https://src.chromium.org/viewvc/blink?view=rev&revision=194792