Change IllegalArgumentException to ArgumentError.

tests/utils/uri_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('uriTest');
 
 #import('../../lib/utf/utf.dart');
 #import('../../lib/uri/uri.dart');
 
 testUri(String uri, bool isAbsolute) {
@@ skipping 124 matching lines @@
       "https://example.com",
       new Uri.fromString("https://example.com/a/b/c").origin);
   Expect.stringEquals(
       "http://example.com:1234",
       new Uri.fromString("http://example.com:1234/a/b/c").origin);
   Expect.stringEquals(
       "https://example.com:1234",
       new Uri.fromString("https://example.com:1234/a/b/c").origin);
   Expect.throws(
       () => new Uri.fromString("http:").origin,
-      (e) { return e is IllegalArgumentException; },
+      (e) { return e is ArgumentError; },
       "origin for uri with empty domain should fail");
   Expect.throws(
       () => const Uri.fromComponents(
           scheme: "http",
           userInfo: null,
           domain: "",
           port: 80,
           path: "/a/b/c",
           query: "query",
           fragment: "fragment").origin,
-      (e) { return e is IllegalArgumentException; },
+      (e) { return e is ArgumentError; },
       "origin for uri with empty domain should fail");
   Expect.throws(
       () => const Uri.fromComponents(
           scheme: null,
           userInfo: null,
           domain: "",
           port: 80,
           path: "/a/b/c",
           query: "query",
           fragment: "fragment").origin,
-      (e) { return e is IllegalArgumentException; },
+      (e) { return e is ArgumentError; },
       "origin for uri with empty scheme should fail");
   Expect.throws(
       () => const Uri.fromComponents(
           scheme: "http",
           userInfo: null,
           domain: null,
           port: 80,
           path: "/a/b/c",
           query: "query",
           fragment: "fragment").origin,
-      (e) { return e is IllegalArgumentException; },
+      (e) { return e is ArgumentError; },
       "origin for uri with empty domain should fail");
   Expect.throws(
       () => new Uri.fromString("http://:80").origin,
-      (e) { return e is IllegalArgumentException; },
+      (e) { return e is ArgumentError; },
       "origin for uri with empty domain should fail");
   Expect.throws(
       () => new Uri.fromString("file://localhost/test.txt").origin,
-      (e) { return e is IllegalArgumentException; },
+      (e) { return e is ArgumentError; },
       "origin for non-http/https uri should fail");
 
   // URI encode tests
   // Note: dart2js won't handle '\ud800\udc00' and frog
   // won't handle '\u{10000}'. So we cons this up synthetically...
   var s = decodeUtf8([0xf0, 0x90, 0x80, 0x80]);
 
   testEncodeDecode("\uFFFE", "%EF%BF%BE");
   testEncodeDecode("\uFFFF", "%EF%BF%BF");
   testEncodeDecode("\uFFFE", "%EF%BF%BE");
   testEncodeDecode("\uFFFF", "%EF%BF%BF");
   testEncodeDecode("\x7f", "%7F");
   testEncodeDecode("\x80", "%C2%80");
   testEncodeDecode("\u0800", "%E0%A0%80");
   testEncodeDecode(":/@',;?&=+\$", ":/@',;?&=+\$");
   testEncodeDecode(s, "%F0%90%80%80");
   testEncodeDecodeComponent("\uFFFE", "%EF%BF%BE");
   testEncodeDecodeComponent("\uFFFF", "%EF%BF%BF");
   testEncodeDecodeComponent("\uFFFE", "%EF%BF%BE");
   testEncodeDecodeComponent("\uFFFF", "%EF%BF%BF");
   testEncodeDecodeComponent("\x7f", "%7F");
   testEncodeDecodeComponent("\x80", "%C2%80");
   testEncodeDecodeComponent("\u0800", "%E0%A0%80");
   testEncodeDecodeComponent(":/@',;?&=+\$", "%3A%2F%40'%2C%3B%3F%26%3D%2B%24");
   testEncodeDecodeComponent(s, "%F0%90%80%80");
 }