Web Animations: Throw TypeErrors for invalid timing parameters

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

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef AnimationEffectTiming_h
 #define AnimationEffectTiming_h
 
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "core/CoreExport.h"
 #include "core/animation/AnimationEffect.h"
@@ skipping 14 matching lines @@
     double iterationStart();
     double iterations();
     void duration(UnrestrictedDoubleOrString&);
     double playbackRate();
     String direction();
     String easing();
 
     void setDelay(double);
     void setEndDelay(double);
     void setFill(String);
-    void setIterationStart(double);
-    void setIterations(double);
-    void setDuration(const UnrestrictedDoubleOrString&);
+    void setIterationStart(double, ExceptionState&);
+    void setIterations(double, ExceptionState&);
+    void setDuration(const UnrestrictedDoubleOrString&, ExceptionState&);
     void setPlaybackRate(double);
     void setDirection(String);
     void setEasing(String, ExceptionState&);
 
     DECLARE_TRACE();
 
 private:
     Member<AnimationEffect> m_parent;
     explicit AnimationEffectTiming(AnimationEffect*);
 };
 
 } // namespace blink
 
 #endif