Change IllegalArgumentException to ArgumentError.

pkg/fixnum/test/int_64_test.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.
 
 #library('int64test');
 #import('../fixnum.dart');
 
 void main() {
   testAdditive();
   testBitOps();
@@ skipping 497 matching lines @@
       new int64.fromInts(0x92345678, 0x9abcdef0).shiftRightUnsigned(36));
   Expect.equals(new int64.fromInts(0x00000000, 0x00923456),
       new int64.fromInts(0x92345678, 0x9abcdef0).shiftRightUnsigned(40));
   Expect.equals(new int64.fromInts(0x00000000, 0x00092345),
       new int64.fromInts(0x92345678, 0x9abcdef0).shiftRightUnsigned(44));
   Expect.equals(new int64.fromInts(0x00000000, 0x00009234),
       new int64.fromInts(0x92345678, 0x9abcdef0).shiftRightUnsigned(48));
 
   try {
     new int64.fromInt(17) >> -1;
-    Expect.fail("x >> -1 should throw IllegalArgumentException");
-  } on IllegalArgumentException catch (e) {
+    Expect.fail("x >> -1 should throw ArgumentError");
+  } on ArgumentError catch (e) {
   }
 
   try {
     new int64.fromInt(17) << -1;
-    Expect.fail("x >> -1 should throw IllegalArgumentException");
-  } on IllegalArgumentException catch (e) {
+    Expect.fail("x >> -1 should throw ArgumentError");
+  } on ArgumentError catch (e) {
   }
 
   try {
     new int64.fromInt(17).shiftRightUnsigned(-1);
-    Expect.fail("x >> -1 should throw IllegalArgumentException");
-  } on IllegalArgumentException catch (e) {
+    Expect.fail("x >> -1 should throw ArgumentError");
+  } on ArgumentError catch (e) {
   }
 
 }
 
 void testToHexString() {
   int64 deadbeef12341234 = new int64.fromInts(0xDEADBEEF, 0x12341234);
   Expect.equals("0", int64.ZERO.toHexString());
   Expect.equals("DEADBEEF12341234", deadbeef12341234.toHexString());
 }
 
@@ skipping 55 matching lines @@
   Expect.equals("777777777777777777777", int64.MAX_VALUE.toRadixString(8));
   Expect.equals("67404283172107811827", int64.MAX_VALUE.toRadixString(9));
   Expect.equals("9223372036854775807", int64.MAX_VALUE.toRadixString(10));
   Expect.equals("1728002635214590697", int64.MAX_VALUE.toRadixString(11));
   Expect.equals("41A792678515120367", int64.MAX_VALUE.toRadixString(12));
   Expect.equals("10B269549075433C37", int64.MAX_VALUE.toRadixString(13));
   Expect.equals("4340724C6C71DC7A7", int64.MAX_VALUE.toRadixString(14));
   Expect.equals("160E2AD3246366807", int64.MAX_VALUE.toRadixString(15));
   Expect.equals("7FFFFFFFFFFFFFFF", int64.MAX_VALUE.toRadixString(16));
 }