[Effen] Reduce splashes when scrolling.

[Effen] Reduce splashes when scrolling.
Pipe the remaining time for an animation all the way out to the AnimatedValue.
Make splashes abortable, which causes them to continue to fade but no longer grow, by having them fade in 100ms or however long the animation was still going to go for, whichever is quickest.
Make Scrollables support objects registering with them to be told when scrolling happens.
Make UINode support subclasses being informed when _remove() was called.
Hook all that together to make splashes go away when scrolling by having them register with any ancestor Scrollables such that when those scroll, all the splashes get aborted. Unregister when removed.

R=eseidel@chromium.org

Committed: https://chromium.googlesource.com/external/mojo/+/9b93cd7fb5101893cbeec17a2afcfba8544cd5e0

[eseidel, 2015-04-20 22:45:03]

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

[eseidel, 2015-04-20 22:45:04]

https://codereview.chromium.org/1092423003/diff/1/sky/framework/components/in...
File sky/framework/components/ink_splash.dart (right):

https://codereview.chromium.org/1092423003/diff/1/sky/framework/components/in...
sky/framework/components/ink_splash.dart:70: var s;
What does s mean?

https://codereview.chromium.org/1092423003/diff/1/sky/framework/components/in...
File sky/framework/components/ink_well.dart (right):

https://codereview.chromium.org/1092423003/diff/1/sky/framework/components/in...
sky/framework/components/ink_well.dart:11: class InkWell extends Component
implements ScrollNotifiee {
ScrollClient?  ScrollDelegate?

https://codereview.chromium.org/1092423003/diff/1/sky/framework/components/in...
sky/framework/components/ink_well.dart:59: var node = parent;
Types?

[Hixie, 2015-04-20 22:49:40]

https://codereview.chromium.org/1092423003/diff/1/sky/framework/components/in...
File sky/framework/components/ink_splash.dart (right):

https://codereview.chromium.org/1092423003/diff/1/sky/framework/components/in...
sky/framework/components/ink_splash.dart:70: var s;
On 2015/04/20 at 22:45:04, eseidel wrote:
> What does s mean?

changed to "size"

https://codereview.chromium.org/1092423003/diff/1/sky/framework/components/in...
File sky/framework/components/ink_well.dart (right):

https://codereview.chromium.org/1092423003/diff/1/sky/framework/components/in...
sky/framework/components/ink_well.dart:11: class InkWell extends Component
implements ScrollNotifiee {
On 2015/04/20 at 22:45:04, eseidel wrote:
> ScrollClient?  ScrollDelegate?

Changed all occurrences of Notifiee to Client.

[eseidel, 2015-04-20 22:51:19]

lgtm

[Hixie, 2015-04-20 22:51:28]

Committed patchset #2 (id:20001) manually as
9b93cd7fb5101893cbeec17a2afcfba8544cd5e0 (presubmit successful).