Deprecate FileUriResolver and RelativeFileUriResolver in source_io.dart, replace the usages with Re…

pkg/analyzer/lib/file_system/file_system.dart

 // Copyright (c) 2014, 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.file_system.file_system;
 
 import 'dart:async';
 
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/util/absolute_path.dart';
@@ skipping 201 matching lines @@
   Folder getStateLocation(String pluginId);
 }
 
 /**
  * A [UriResolver] for [Resource]s.
  */
 class ResourceUriResolver extends UriResolver {
   /**
    * The name of the `file` scheme.
    */
-  static String _FILE_SCHEME = "file";
+  static String FILE_SCHEME = "file";

[Brian Wilkerson, 2016/06/16 17:39:30]

This should be marked 'final' now that it's public.

[jwren, 2016/06/16 18:09:56]

Done.

 
   final ResourceProvider _provider;
 
   ResourceUriResolver(this._provider);
 
   @override
   Source resolveAbsolute(Uri uri, [Uri actualUri]) {
-    if (!_isFileUri(uri)) {
+    if (!isFileUri(uri)) {
       return null;
     }
     Resource resource =
         _provider.getResource(_provider.pathContext.fromUri(uri));
     if (resource is File) {
       return resource.createSource(actualUri ?? uri);
     }
     return null;
   }
 
   @override
   Uri restoreAbsolute(Source source) =>
       _provider.pathContext.toUri(source.fullName);
 
   /**
    * Return `true` if the given [uri] is a `file` URI.
    */
-  static bool _isFileUri(Uri uri) => uri.scheme == _FILE_SCHEME;
+  static bool isFileUri(Uri uri) => uri.scheme == FILE_SCHEME;
 }