Explicit animation support
High level description:
- LayerPropertySetter is now LayerAnimator since it manages implicit/explicit animations and the animation queue.
- LayerAnimationElement represents an animation curve.
- LayerAnimationSequence owns a collection of elements.
- The animator works as follows:
o Has a queue of sequences and a collection of running sequences.
o It knows the start time of each running sequence.
o While there are running sequences, LayerAnimator::Step(base::TimeTicks now) is called periodically, and each of the running sequences are updated.
BUG=None
TEST=compositor_unittests, base_unittests
Review URL: http://codereview.chromium.org/8247009
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@106768 0039d316-1c4b-4281-b951-d872f2087c98
21 files changed
