Removed unused ScrollAnimatorMac methods.

Removed unused ScrollAnimatorMac methods.

BUG=

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=196598

[bokan, 2015-06-03 20:50:59]

The CQ bit was checked by bokan@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-06-03 20:51:19]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1165883002/1

[bokan, 2015-06-03 21:44:15]

bokan@chromium.org changed reviewers:
+ ccameron@chromium.org

[bokan, 2015-06-03 21:44:30]

bokan@chromium.org changed reviewers:
- ccameron@chromium.org

[bokan, 2015-06-03 21:44:57]

bokan@chromium.org changed reviewers:
+ vollick@chromium.org

[bokan, 2015-06-03 21:44:57]

Another tiny cleanup

[commit-bot: I haz the power, 2015-06-03 22:10:12]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-06-03 22:10:14]

Dry run: This issue passed the CQ dry run.

[Ian Vollick, 2015-06-05 17:52:05]

On 2015/06/03 at 22:10:14, commit-bot wrote:
> Dry run: This issue passed the CQ dry run.

lgtm

[bokan, 2015-06-05 17:54:44]

The CQ bit was checked by bokan@chromium.org

[commit-bot: I haz the power, 2015-06-05 17:55:19]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1165883002/1

[commit-bot: I haz the power, 2015-06-05 19:16:36]

Committed patchset #1 (id:1) as
https://src.chromium.org/viewvc/blink?view=rev&revision=196598

[Robert Sesek, 2015-06-09 13:58:30]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/1170223002/ by rsesek@chromium.org.

The reason for reverting is: It appears this method is called internally by the
system.

BUG=498242.