Fix smooth progress behavior on JellyBean

Fix smooth progress behavior on JellyBean

The animators in JellyBean send a delta time fom the last time an
animation played instead of 0 for the first frame after an animation
starts. A combination of this and a misplaced "max" function
completely derailed the smooth progress bar animation.

This change also addresses a crash that only occures on JellyBean
that involves early cancellation of a running animation. After the
animation is canceled, the animator tries to run doAnimationFrame
with an empty list of updates. The animation is now allowed to run
itself out. (This should have no visible affect on the animation
since it becomes transparent near completion).

BUG=611125, 610522
Committed: https://crrev.com/2f8f44e6740bda7e9015e252db16cc869721e3a8
Cr-Commit-Position: refs/heads/master@{#393113}

[mdjones, 2016-05-11 22:29:07]

mdjones@chromium.org changed reviewers:
+ dfalcantara@chromium.org

[mdjones, 2016-05-11 22:29:08]

PTAL

[gone, 2016-05-11 22:34:59]

lgtm

[mdjones, 2016-05-11 22:43:43]

The CQ bit was checked by mdjones@chromium.org

[commit-bot: I haz the power, 2016-05-11 22:44:07]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1966943004/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1966943004/1

[commit-bot: I haz the power, 2016-05-12 00:14:28]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-05-12 00:18:38]

Description was changed from

==========
Fix smooth progress behavior on JellyBean

The animators in JellyBean send a delta time fom the last time an
animation played instead of 0 for the first frame after an animation
starts. A combination of this and a misplaced "max" function
completely derailed the smooth progress bar animation.

This change also addresses a crash that only occures on JellyBean
that involves early cancellation of a running animation. After the
animation is canceled, the animator tries to run doAnimationFrame
with an empty list of updates. The animation is now allowed to run
itself out. (This should have no visible affect on the animation
since it becomes transparent near completion).

BUG=611125, 610522
==========

to

==========
Fix smooth progress behavior on JellyBean

The animators in JellyBean send a delta time fom the last time an
animation played instead of 0 for the first frame after an animation
starts. A combination of this and a misplaced "max" function
completely derailed the smooth progress bar animation.

This change also addresses a crash that only occures on JellyBean
that involves early cancellation of a running animation. After the
animation is canceled, the animator tries to run doAnimationFrame
with an empty list of updates. The animation is now allowed to run
itself out. (This should have no visible affect on the animation
since it becomes transparent near completion).

BUG=611125, 610522

Committed: https://crrev.com/2f8f44e6740bda7e9015e252db16cc869721e3a8
Cr-Commit-Position: refs/heads/master@{#393113}
==========

[commit-bot: I haz the power, 2016-05-12 00:18:39]

Patchset 1 (id:??) landed as
https://crrev.com/2f8f44e6740bda7e9015e252db16cc869721e3a8
Cr-Commit-Position: refs/heads/master@{#393113}