Devtools Animations: Update timing information of related animations

Devtools Animations: Update timing information of related animations

Due to unwanted additional complexity of dealing with property lists,
the animation timeline updates the inline style for CSS transitions
& animations. As a result, changes to timing can affect mulitple
animations. This change reflects these timing changes to all affected
animations.

BUG=447083

[samli, 2015-05-25 07:11:16]

samli@chromium.org changed reviewers:
+ pfeldman@chromium.org

[samli, 2015-05-25 07:11:16]

ptal

[samli, 2015-05-26 06:38:04]

test case: http://jsfiddle.net/77hcszL6/

[samli, 2015-05-26 06:41:49]

On 2015/05/26 at 06:38:04, samli wrote:
> test case: http://jsfiddle.net/77hcszL6/

This patch builds on https://codereview.chromium.org/1155773002
Screencast demo: http://youtu.be/O1a58s93qPk

[pfeldman, 2015-05-26 13:38:05]

Played with this use case in ToT, looked at the video. I don't think either of
these is right.
1) When user is editing the animation, there should be a way to persist the
changes. Either via workspaces or via copy-paste from the styles sidebar.
2) There could be multiple animations with different timing / curves, they are
not necessarily supposed to be synchronized

I don't think we should allow editing animations in the timeline unless these
are addressed.

[pfeldman, 2015-05-26 13:38:34]

(we should file a bug and discuss it there).

[pfeldman, 2015-06-29 12:15:56]

pfeldman@chromium.org changed reviewers:
- pfeldman@chromium.org