Remove use of a V8 handle outside of bindings code in TimingInput.cpp.

Source/core/animation/TimingInput.cpp

 // 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.
 
 #include "config.h"
 #include "core/animation/TimingInput.h"
 
 #include "bindings/v8/Dictionary.h"
 #include "core/css/parser/BisonCSSParser.h"
 #include "core/css/resolver/CSSToStyleMap.h"
@@ skipping 109 matching lines @@
     setFillMode(result, fillMode);
 
     double iterationStart = 0;
     timingInputDictionary.get("iterationStart", iterationStart);
     setIterationStart(result, iterationStart);
 
     double iterationCount = 1;
     timingInputDictionary.get("iterations", iterationCount);
     setIterationCount(result, iterationCount);
 
-    v8::Local<v8::Value> iterationDurationValue;
-    if (timingInputDictionary.get("duration", iterationDurationValue)) {
-        double iterationDuration = iterationDurationValue->NumberValue();
+    double iterationDuration = 0;
+    if (timingInputDictionary.get("duration", iterationDuration)) {
         setIterationDuration(result, iterationDuration);
     }
 
     double playbackRate = 1;
     timingInputDictionary.get("playbackRate", playbackRate);
     setPlaybackRate(result, playbackRate);
 
     String direction;
     timingInputDictionary.get("direction", direction);
     setPlaybackDirection(result, direction);
 
     String timingFunctionString;
     timingInputDictionary.get("easing", timingFunctionString);
     setTimingFunction(result, timingFunctionString);
 
     result.assertValid();
 
     return result;
 }
 
 Timing TimingInput::convert(double duration)
 {
     Timing result;
     setIterationDuration(result, duration);
     return result;
 }
 
 } // namespace WebCore