Remove class FastUri from analyzer.

pkg/analyzer/test/src/summary/pub_summary_test.dart

 // Copyright (c) 2016, 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.
 
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/source/package_map_resolver.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/summary/format.dart';
 import 'package:analyzer/src/summary/idl.dart';
 import 'package:analyzer/src/summary/pub_summary.dart';
 import 'package:analyzer/src/summary/summarize_elements.dart';
-import 'package:analyzer/src/util/fast_uri.dart';
 import 'package:path/path.dart' as pathos;
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
 import '../context/abstract_context.dart';
 import '../context/mock_sdk.dart';
 
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(PubSummaryManagerTest);
@@ skipping 1074 matching lines @@
     String aaaPath = '/Users/user/projects/aaa';
     // Create package files.
     {
       File file = newFile(
           '$aaaPath/lib/a.dart',
           '''
 class A {}
 ''');
       PackageBundleAssembler assembler = new PackageBundleAssembler()
         ..addUnlinkedUnit(
-            file.createSource(FastUri.parse('package:aaa/a.dart')),
+            file.createSource(Uri.parse('package:aaa/a.dart')),
             new UnlinkedUnitBuilder());
       resourceProvider.newFileWithBytes(
           resourceProvider
               .convertPath('$aaaPath/${PubSummaryManager.UNLINKED_SPEC_NAME}'),
           assembler.assemble().toBuffer());
     }
     newFile(
         '$CACHE/bbb/lib/b.dart',
         '''
 class B {}
@@ skipping 259 matching lines @@
     }
   }
 
   static PackageBundle _getBundleByPackageName(
       Map<PubPackage, PackageBundle> bundles, String name) {
     PubPackage package =
         bundles.keys.singleWhere((package) => package.name == name);
     return bundles[package];
   }
 }