ScriptedAnimationController::setThrottled should extend MinimumAnimationInterval
https://bugs.webkit.org/show_bug.cgi?id=116193

Reviewed by Simon Fraser.

* dom/ScriptedAnimationController.cpp:
(WebCore::ScriptedAnimationController::ScriptedAnimationController):
    - initialize m_throttled
(WebCore::ScriptedAnimationController::setThrottled):
    - sets m_throttled, reschedule when this changes.
(WebCore::ScriptedAnimationController::scheduleAnimation):
    - if throtled don't use a display link, and extend the timeout.
* dom/ScriptedAnimationController.h:
(ScriptedAnimationController):
    - Added m_throttled



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@150159 268f45cc-cd09-0410-ab3c-d52691b4dbfc