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

tests/compiler/dart2js/field_type_inferer_test.dart

Index: tests/compiler/dart2js/field_type_inferer_test.dart
diff --git a/tests/compiler/dart2js/field_type_inferer_test.dart b/tests/compiler/dart2js/field_type_inferer_test.dart
index 59db184dab1eaeedf037a019689a0b7916d862b7..ee2b5fb82b71e6510d78d564e5f94739bed86db6 100644
--- a/tests/compiler/dart2js/field_type_inferer_test.dart
+++ b/tests/compiler/dart2js/field_type_inferer_test.dart
@@ -15,7 +15,7 @@ void compileAndFind(String code,
                     String memberName,
                     bool disableInlining,
                     check(compiler, element)) {
-  Uri uri = new Uri.fromComponents(scheme: 'source');
+  Uri uri = new Uri(scheme: 'source');
   var compiler = compilerFor(code, uri);
   compiler.runCompiler(uri);
   compiler.disableInlining = disableInlining;