Rafael Weinstein f7cdfda454 Add initialDelay to AnimationGenerator and add Animation class.
This patch allows for an initial delay before an animation begins and also adds an Animation class which encapsulates a value which is long-lived, can be explicitly set and also animated from its current value to another value.

BUG=
R=abarth@chromium.org

Review URL: https://codereview.chromium.org/994143002
2015-03-10 12:22:15 -07:00
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