[WIP] Web Animations API: Constructing an Animation from partial keyframes throws a JS exception

Source/core/animation/ElementAnimation.h

Index: Source/core/animation/ElementAnimation.h
diff --git a/Source/core/animation/ElementAnimation.h b/Source/core/animation/ElementAnimation.h
index be811194cc943801c0114163d7a7390b1fe8903e..31f3722e661f5d121f39ee46113058412a9dbdad 100644
--- a/Source/core/animation/ElementAnimation.h
+++ b/Source/core/animation/ElementAnimation.h
@@ -59,19 +59,19 @@ public:
         return animateInternal(element, effect, Timing());
     }
 
-    static Animation* animate(Element& element, const Vector<Dictionary>& keyframeDictionaryVector, const Dictionary& timingInputDictionary)
+    static Animation* animate(Element& element, const Vector<Dictionary>& keyframeDictionaryVector, const Dictionary& timingInputDictionary, ExceptionState& exceptionState)
     {
-        return animateInternal(element, EffectInput::convert(&element, keyframeDictionaryVector), TimingInput::convert(timingInputDictionary));
+        return animateInternal(element, EffectInput::convert(&element, keyframeDictionaryVector, exceptionState), TimingInput::convert(timingInputDictionary));
     }
 
-    static Animation* animate(Element& element, const Vector<Dictionary>& keyframeDictionaryVector, double duration)
+    static Animation* animate(Element& element, const Vector<Dictionary>& keyframeDictionaryVector, double duration, ExceptionState& exceptionState)
     {
-        return animateInternal(element, EffectInput::convert(&element, keyframeDictionaryVector), TimingInput::convert(duration));
+        return animateInternal(element, EffectInput::convert(&element, keyframeDictionaryVector, exceptionState), TimingInput::convert(duration));
     }
 
-    static Animation* animate(Element& element, const Vector<Dictionary>& keyframeDictionaryVector)
+    static Animation* animate(Element& element, const Vector<Dictionary>& keyframeDictionaryVector, ExceptionState& exceptionState)
     {
-        return animateInternal(element, EffectInput::convert(&element, keyframeDictionaryVector), Timing());
+        return animateInternal(element, EffectInput::convert(&element, keyframeDictionaryVector, exceptionState), Timing());
     }
 
 private: