Remove abstract from class members in dart libraries

sdk/lib/core/double.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 // TODO: Convert this abstract class into a concrete class double
 // that uses the patch class functionality to account for the
 // different platform implementations.
 
 /**
  * Representation of Dart doubles containing double specific constants
  * and operations and specializations of operations inherited from
  * [num].
  *
  * The [double] type is contagious. Operations on [double]s return
  * [double] results.
  */
 abstract class double extends num {
   static const double NAN = 0.0 / 0.0;
   static const double INFINITY = 1.0 / 0.0;
   static const double NEGATIVE_INFINITY = -INFINITY;
   static const double MIN_POSITIVE = 5e-324;
   static const double MAX_FINITE = 1.7976931348623157e+308;
 
   /** Return the remainder from dividing this [double] by [other]. */
-  abstract double remainder(num other);
+  double remainder(num other);
 
   /** Addition operator. */
-  abstract double operator +(num other);
+  double operator +(num other);
 
   /** Subtraction operator. */
-  abstract double operator -(num other);
+  double operator -(num other);
 
   /** Multiplication operator. */
-  abstract double operator *(num other);
+  double operator *(num other);
 
   /** Euclidean modulo operator. */
-  abstract double operator %(num other);
+  double operator %(num other);
 
   /** Division operator. */
-  abstract double operator /(num other);
+  double operator /(num other);
 
   /**
    * Truncating division operator.
    *
    * The result of the truncating division [:a ~/ b:] is equivalent to
    * [:(a / b).truncate():].
    */
-  abstract double operator ~/(num other);
+  double operator ~/(num other);
 
   /** Negate operator. */
-  abstract double operator -();
+  double operator -();
 
   /** Returns the absolute value of this [double]. */
-  abstract double abs();
+  double abs();
 
   /**
    * Returns the integer value closest to this [double].
    *
    * Rounds away from zero when there is no closest integer:
    *  [:(3.5).round() == 4:] and [:(-3.5).round() == -4:].
    */
-  abstract double round();
+  double round();
 
   /** Returns the greatest integer value no greater than this [double]. */
-  abstract double floor();
+  double floor();
 
   /** Returns the least integer value that is no smaller than this [double]. */
-  abstract double ceil();
+  double ceil();
 
   /**
    * Returns the integer value obtained by discarding any fractional
    * digits from this [double].
    */
-  abstract double truncate();
+  double truncate();
 
   /**
    * Provide a representation of this [double] value.
    *
    * The representation is a number literal such that the closest double value
    * to the representation's mathematical value is this [double].
    *
    * Returns "NaN" for the Not-a-Number value.
    * Returns "Infinity" and "-Infinity" for positive and negative Infinity.
    * Returns "-0.0" for negative zero.
    *
    * It should always be the case that if [:d:] is a [double], then
    * [:d == double.parse(d.toString()):].
    */
-  abstract String toString();
+  String toString();
 
   /**
    * Parse [source] as an double literal and return its value.
    *
    * Accepts the same format as double literals:
    *   [: ['+'|'-'] [digit* '.'] digit+ [('e'|'E') ['+'|'-'] digit+] :]
    *
    * Also recognizes "NaN", "Infinity" and "-Infinity" as inputs and
    * returns the corresponding double value.
    *
    * Throws a [FormatException] if [source] is not a valid double literal.
    */
   external static double parse(String source);
 }