Add add and subtract operations to Uint32x4

runtime/lib/typed_data.dart

 // Copyright (c) 2013, 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.
 
 // patch classes for Int8List ..... Float64List and ByteData implementations.
 
 patch class Int8List {
   /* patch */ factory Int8List(int length) {
     return new _Int8Array(length);
   }
@@ skipping 2063 matching lines @@
   }
   Uint32x4 _or(Uint32x4 other) native "Uint32x4_or";
   Uint32x4 operator &(Uint32x4 other) {
     return _and(other);
   }
   Uint32x4 _and(Uint32x4 other) native "Uint32x4_and";
   Uint32x4 operator ^(Uint32x4 other) {
     return _xor(other);
   }
   Uint32x4 _xor(Uint32x4 other) native "Uint32x4_xor";
+  Uint32x4 operator +(Uint32x4 other) {
+    return _add(other);
+  }
+  Uint32x4 _add(Uint32x4 other) native "Uint32x4_add";
+  Uint32x4 operator -(Uint32x4 other) {
+    return _sub(other);
+  }
+  Uint32x4 _sub(Uint32x4 other) native "Uint32x4_sub";
   int get x native "Uint32x4_getX";
   int get y native "Uint32x4_getY";
   int get z native "Uint32x4_getZ";
   int get w native "Uint32x4_getW";
   Uint32x4 withX(int x) native "Uint32x4_setX";
   Uint32x4 withY(int y) native "Uint32x4_setY";
   Uint32x4 withZ(int z) native "Uint32x4_setZ";
   Uint32x4 withW(int w) native "Uint32x4_setW";
   bool get flagX native "Uint32x4_getFlagX";
   bool get flagY native "Uint32x4_getFlagY";
@@ skipping 1036 matching lines @@
     return value;
   }
   return object;
 }
 
 
 void _throwRangeError(int index, int length) {
   String message = "$index must be in the range [0..$length)";
   throw new RangeError(message);
 }