Revert "Parts must start with 'part of'" and "Attempt to fix VM build"

dart/samples/ui_lib/touch/Math.dart

-part of touch;
-
 // Copyright (c) 2011, 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(jacobr): pick a better name. This was goog.math in Closure.
 /**
  * Math utility functions originally from the closure Math library.
  */
 class GoogleMath {
   /**
    * Takes a [value] and clamps it to within the bounds specified by
    * [min] and [max].
    */
   static num clamp(num value, num min, num max) {
     return Math.min(Math.max(value, min), max);
   }
 
   /**
    * Tests whether the two values are equal to each other, within a certain
    * tolerance to adjust for floating point errors.
    * The optional [tolerance] value d Defaults to 0.000001. If specified,
    * it should be greater than 0.
    * Returns whether [a] and [b] are nearly equal.
    */
   static bool nearlyEquals(num a, num b, [num tolerance = 0.000001]) {
     return (a - b).abs() <= tolerance;
   }
 }