Remove class FastUri from analyzer.

pkg/analyzer/lib/src/generated/gn.dart

 // Copyright (c) 2017, 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 analyzer.src.generated.gn;
 
 import 'dart:collection';
 import 'dart:core';
 
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/generated/source_io.dart';
 import 'package:analyzer/src/generated/workspace.dart';
-import 'package:analyzer/src/util/fast_uri.dart';
 import 'package:path/path.dart';
 
 /**
  * The [UriResolver] used to resolve `file` URIs in a [GnWorkspace].
  */
 class GnFileUriResolver extends ResourceUriResolver {
   /**
    * The workspace associated with this resolver.
    */
   final GnWorkspace workspace;
@@ skipping 94 matching lines @@
     String package = _packages.keys.firstWhere(
         (key) => context.isWithin(_packages[key], path),
         orElse: () => null);
 
     if (package == null) {
       return null;
     }
 
     String sourcePath = context.relative(path, from: _packages[package]);
 
-    return FastUri.parse('package:$package/$sourcePath');
+    return Uri.parse('package:$package/$sourcePath');
   }
 }
 
 /**
  * Information about a Gn workspace.
  */
 class GnWorkspace extends Workspace {
   /**
    * The name of the directory that identifies the root of the workspace.
    */
@@ skipping 119 matching lines @@
         String outDirectory = _getOutDirectory(provider, root);
         Map<String, String> packages = _getPackages(provider, outDirectory);
         return new GnWorkspace._(provider, root, packages);
       }
 
       // Go up the folder.
       folder = parent;
     }
   }
 }