Convert svg/animations to use SMIL methods for driving the timeline

Convert svg/animations to use SMIL methods for driving the timeline
https://bugs.webkit.org/show_bug.cgi?id=78422

Reviewed by Hajime Morita.

Fix last-minute typo in clearTimesWithDynamicOrigins, leading to assertions browsing the W3C SVG animation tests.
Covered by existing tests in svg/animations.

* svg/SVGAnimationElement.cpp: Remove unused endedActiveInterval.
* svg/SVGAnimationElement.h: Ditto.
* svg/animation/SVGSMILElement.cpp:
(WebCore::clearTimesWithDynamicOrigins): Fix order of walking the times list.
(WebCore::SVGSMILElement::reset): Move calls to clearTimesWithDynamicOrigins into endedActiveInterval.
(WebCore::SVGSMILElement::endedActiveInterval):
* svg/animation/SVGSMILElement.h:
(SVGSMILElement): Devirtualize endedActiveInterval.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@107693 268f45cc-cd09-0410-ab3c-d52691b4dbfc