Web Animations - responsive interpolation

Source/core/animation/StringKeyframe.h

Index: Source/core/animation/StringKeyframe.h
diff --git a/Source/core/animation/StringKeyframe.h b/Source/core/animation/StringKeyframe.h
index 7bf226e8cc74d0d20c977675bf70a7667169d84d..c6a753e3a7647d99041000db07c8d706f74959db 100644
--- a/Source/core/animation/StringKeyframe.h
+++ b/Source/core/animation/StringKeyframe.h
@@ -36,7 +36,6 @@ public:
 
         CSSValue* value() const { return m_value.get(); }
         virtual const PassRefPtrWillBeRawPtr<AnimatableValue> getAnimatableValue() const OVERRIDE FINAL {
-            ASSERT(m_animatableValueCache);

[shans, 2014/05/26 03:31:01]

Why did we remove this assert?

[alancutter (OOO until 2018), 2014/05/26 05:22:41]

This may return nullptr for transform/opacity now if style dependent values are
used in the keyframe, see the change in CompositorAnimations.cpp.
The sooner we kill this function the better.

[Eric Willigers, 2014/05/26 06:32:47]

With deferred style resolving, the keyframe's cached value can be null.

CompositorAnimations::isCandidateForAnimationOnCompositor now explicitly checks
for null.

             return m_animatableValueCache.get();
         }