Add use counters for function values of easing

third_party/WebKit/Source/core/animation/AnimationEffectTiming.cpp

Index: third_party/WebKit/Source/core/animation/AnimationEffectTiming.cpp
diff --git a/third_party/WebKit/Source/core/animation/AnimationEffectTiming.cpp b/third_party/WebKit/Source/core/animation/AnimationEffectTiming.cpp
index 55f811107c4b679502d647b3629b9eeacd35a519..e0d87bb2e344171a7d66b0f4c4a7fc03df976f15 100644
--- a/third_party/WebKit/Source/core/animation/AnimationEffectTiming.cpp
+++ b/third_party/WebKit/Source/core/animation/AnimationEffectTiming.cpp
@@ -130,7 +130,7 @@ void AnimationEffectTiming::setDirection(String direction)
 void AnimationEffectTiming::setEasing(String easing)
 {
     Timing timing = m_parent->specifiedTiming();
-    TimingInput::setTimingFunction(timing, easing);
+    TimingInput::setTimingFunction(timing, easing, nullptr);

[alancutter (OOO until 2018), 2016/04/07 07:36:20]

I would add a TODO here to add [SetterCallWith=Document] to IDL or a comment
explaining why it's okay to not use count this scenario.

     m_parent->updateSpecifiedTiming(timing);
 }