Web Animations: Add a name to AnimationNode and trace running players

Web Animations: Add a name to AnimationNode and trace running players

For CSS Animations the name is prefilled with the animation-name. For
Transitions the name is the transitioning property.

BUG=351446
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=181724

[dstockwell, 2014-09-03 08:22:06]

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

[shane.stephens, 2014-09-10 09:45:09]

shane.stephens@gmail.com changed reviewers:
+ shane.stephens@gmail.com

[shane.stephens, 2014-09-10 09:45:09]

The CQ bit was checked by shane.stephens@gmail.com

[shane.stephens, 2014-09-10 09:45:09]

lgtm

[commit-bot: I haz the power, 2014-09-10 09:45:54]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/dstockwell@chromium.org/535843002/40001

[commit-bot: I haz the power, 2014-09-10 09:45:55]

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

[commit-bot: I haz the power, 2014-09-10 09:45:56]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer or
a provisional committer, _not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[shans, 2014-09-10 09:47:02]

The CQ bit was checked by shans@chromium.org

[shans, 2014-09-10 09:47:03]

lgtm

[commit-bot: I haz the power, 2014-09-10 09:48:03]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/dstockwell@chromium.org/535843002/40001

[commit-bot: I haz the power, 2014-09-10 10:35:26]

Committed patchset #3 (id:40001) as 181724