Use nullptr_t for RefPtr, PassRefPtr and RawPtr.

Source/platform/animation/AnimationValue.h

 /*
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Intel Corporation. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 24 matching lines @@
 #include "wtf/RefPtr.h"
 
 namespace WebCore {
 
 // Base class for animation values (also used for transitions). Here to
 // represent values for properties being animated via the GraphicsLayer,
 // without pulling in style-related data from outside of the platform directory.
 class AnimationValue {
     WTF_MAKE_FAST_ALLOCATED;
 public:
-    explicit AnimationValue(double keyTime, PassRefPtr<TimingFunction> timingFunction = 0)
+    explicit AnimationValue(double keyTime, PassRefPtr<TimingFunction> timingFunction = nullptr)
         : m_keyTime(keyTime)
         , m_timingFunction(timingFunction)
     {
     }
 
     virtual ~AnimationValue() { }
 
     double keyTime() const { return m_keyTime; }
     const TimingFunction* timingFunction() const { return m_timingFunction.get(); }
     virtual PassOwnPtr<AnimationValue> clone() const = 0;
 
 private:
     double m_keyTime;
     RefPtr<TimingFunction> m_timingFunction;
 };
 
 // Used to store one float value of an animation.
 class FloatAnimationValue FINAL : public AnimationValue {
 public:
-    FloatAnimationValue(double keyTime, float value, PassRefPtr<TimingFunction> timingFunction = 0)
+    FloatAnimationValue(double keyTime, float value, PassRefPtr<TimingFunction> timingFunction = nullptr)
         : AnimationValue(keyTime, timingFunction)
         , m_value(value)
     {
     }
     virtual PassOwnPtr<AnimationValue> clone() const OVERRIDE { return adoptPtr(new FloatAnimationValue(*this)); }
 
     float value() const { return m_value; }
 
 private:
     float m_value;
 };
 
 // Used to store one transform value in a keyframe list.
 class TransformAnimationValue FINAL : public AnimationValue {
 public:
-    explicit TransformAnimationValue(double keyTime, const TransformOperations* value = 0, PassRefPtr<TimingFunction> timingFunction = 0)
+    explicit TransformAnimationValue(double keyTime, const TransformOperations* value = 0, PassRefPtr<TimingFunction> timingFunction = nullptr)
         : AnimationValue(keyTime, timingFunction)
     {
         if (value)
             m_value = *value;
     }
     virtual PassOwnPtr<AnimationValue> clone() const OVERRIDE { return adoptPtr(new TransformAnimationValue(*this)); }
 
     const TransformOperations* value() const { return &m_value; }
 
 private:
     TransformOperations m_value;
 };
 
 // Used to store one filter value in a keyframe list.
 class FilterAnimationValue FINAL : public AnimationValue {
 public:
-    explicit FilterAnimationValue(double keyTime, const FilterOperations* value = 0, PassRefPtr<TimingFunction> timingFunction = 0)
+    explicit FilterAnimationValue(double keyTime, const FilterOperations* value = 0, PassRefPtr<TimingFunction> timingFunction = nullptr)
         : AnimationValue(keyTime, timingFunction)
     {
         if (value)
             m_value = *value;
     }
     virtual PassOwnPtr<AnimationValue> clone() const OVERRIDE { return adoptPtr(new FilterAnimationValue(*this)); }
 
     const FilterOperations* value() const { return &m_value; }
 
 private:
     FilterOperations m_value;
 };
 
 } // namespace WebCore
 
 #endif // AnimationValue_h