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

dart/samples/ui_lib/touch/BezierPhysics.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.
 
 /**
  * Functions to model constant acceleration as a cubic Bezier
  * curve (http://en.wikipedia.org/wiki/Bezier_curve). These functions are
  * intended to generate the transition timing function for CSS transitions.
  * Please see
  * [http://www.w3.org/TR/css3-transitions/#transition-timing-function_tag].
@@ skipping 94 matching lines @@
     // The intermediate control point must have coordinates within the
     // interval [0,1].
     assert(x >= 0 && x <= 1 && y >= 0 && y <= 1);
     num x1 = x * _TWO_THIRDS;
     num y1 = y * _TWO_THIRDS;
     num x2 = x1 + _ONE_THIRD;
     num y2 = y1 + _ONE_THIRD;
     return [x1, y1, x2, y2];
   }
 }