Web Animations API: Interpolate into reference rather than returning new value.

Web Animations API: Interpolate into reference rather than returning new value.

This is a re-work of https://codereview.chromium.org/238313003/

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=185088

[shans, 2014-11-10 23:29:30]

The CQ bit was checked by shans@chromium.org

[shans, 2014-11-10 23:29:31]

The CQ bit was unchecked by shans@chromium.org

[alancutter (OOO until 2018), 2014-11-11 00:06:32]

alancutter@chromium.org changed reviewers:
+ alancutter@chromium.org

[alancutter (OOO until 2018), 2014-11-11 00:06:33]

lgtm with nit.

Return references are conventionally last in the parameter list.

[shans, 2014-11-11 00:23:52]

The CQ bit was checked by shans@chromium.org

[commit-bot: I haz the power, 2014-11-11 00:24:20]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/712143003/20001

[dstockwell, 2014-11-11 00:28:30]

dstockwell@chromium.org changed reviewers:
+ dstockwell@chromium.org

[dstockwell, 2014-11-11 00:28:30]

lgtm

[commit-bot: I haz the power, 2014-11-11 01:31:03]

Committed patchset #2 (id:20001) as 185088