Revert "Add Resource class. Currently unimplemented."

runtime/lib/core_patch.dart

 // Copyright (c) 2013, 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 "dart:math";
 import "dart:typed_data";
 
 // Equivalent of calling FATAL from C++ code.
 _fatal(msg) native "DartCore_fatal";
 
@@ skipping 187 matching lines @@
       if (isYieldEach) {
         // Spec mandates: it is a dynamic error if the class of [the object
         // returned by yield*] does not implement Iterable.
         yieldEachIterator = (current as Iterable).iterator;
         continue;
       }
       return true;
     }
   }
 }
-
-patch class Resource {
-  /* patch */ const factory Resource(String uri) = _Resource;
-}
-
-class _Resource implements Resource {
-  final String _location;
-
-  const _Resource(String uri) : _location = uri;
-
-  Uri get uri => Uri.base.resolve(_location);
-
-  Stream<List<int>> openRead() {
-    throw new UnimplementedError("openRead");
-  }
-
-  Future<List<int>> readAsBytes() {
-    throw new UnimplementedError("readAsBytes");
-  }
-
-  Future<String> readAsString({Encoding encoding}) {
-    throw new UnimplementedError("readAsString");
-  }
-}