Remove wtf_ceil.

Source/platform/Decimal.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 115 matching lines @@
 
     bool isFinite() const { return m_data.isFinite(); }
     bool isInfinity() const { return m_data.isInfinity(); }
     bool isNaN() const { return m_data.isNaN(); }
     bool isNegative() const { return sign() == Negative; }
     bool isPositive() const { return sign() == Positive; }
     bool isSpecial() const { return m_data.isSpecial(); }
     bool isZero() const { return m_data.isZero(); }
 
     Decimal abs() const;
-    Decimal ceiling() const;
+    Decimal ceil() const;
     Decimal floor() const;
     Decimal remainder(const Decimal&) const;
     Decimal round() const;
 
     double toDouble() const;
     // Note: toString method supports infinity and nan but fromString not.
     String toString() const;
 
     static Decimal fromDouble(double);
     // fromString supports following syntax EBNF:
@@ skipping 26 matching lines @@
     static inline Sign invertSign(Sign sign) { return sign == Negative ? Positive : Negative; }
 
     Sign sign() const { return m_data.sign(); }
 
     EncodedData m_data;
 };
 
 } // namespace blink
 
 #endif // Decimal_h