Reviewed by Simon Fraser.

        https://bugs.webkit.org/show_bug.cgi?id=59149
        (Regression) Existing animations are not replaced when filling.

        Hardware animations that fill forwards were not being correctly
        replaced when the animation was removed. The actual animation
        logic was working correctly, but it wasn't deleting the
        CoreAnimation animation from the PlatformLayer. The fix was
        to explicitly call endAnimation when disconnecting the animation
        from its RenderObject.

        Test: animations/3d/replace-filling-transform.html

        * page/animation/AnimationBase.h:
        (WebCore::AnimationBase::clear): call endAnimation as the animation is cleared

2011-04-29  Dean Jackson  <dino@apple.com>

        Reviewed by Simon Fraser.

        https://bugs.webkit.org/show_bug.cgi?id=59149
        (Regression) Existing animations are not replaced when filling.

        Add a test that exercises the case where a hardware animation
        is in a filling mode, then is replaced by a new animation.

        * animations/3d/replace-filling-transform-expected.txt: Added.
        * animations/3d/replace-filling-transform.html: Added.
        * animations/3d/replace-filling-transform-expected.png: Added.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@85338 268f45cc-cd09-0410-ab3c-d52691b4dbfc