Merge the dart:uri library into dart:core and update the Uri class

tests/utils/dummy_compiler_test.dart

Index: tests/utils/dummy_compiler_test.dart
diff --git a/tests/utils/dummy_compiler_test.dart b/tests/utils/dummy_compiler_test.dart
index af13834435f318f9d6db8d98a3f8167ea64e6980..50ab451daccef3a5638f67fe7ffaa0e5f94580fb 100644
--- a/tests/utils/dummy_compiler_test.dart
+++ b/tests/utils/dummy_compiler_test.dart
@@ -6,7 +6,6 @@
 library dummy_compiler;
 
 import 'dart:async';
-import 'dart:uri';
 
 import '../../sdk/lib/_internal/compiler/compiler.dart';
 
@@ -94,9 +93,9 @@ void handler(Uri uri, int begin, int end, String message, Diagnostic kind) {
 
 main() {
   Future<String> result =
-      compile(new Uri.fromComponents(scheme: 'main'),
-              new Uri.fromComponents(scheme: 'lib', path: '/'),
-              new Uri.fromComponents(scheme: 'package', path: '/'),
+      compile(new Uri(scheme: 'main'),
+              new Uri(scheme: 'lib', path: '/'),
+              new Uri(scheme: 'package', path: '/'),
               provider, handler);
   result.then((String code) {
     if (code == null) {