Track Source objects in PackageNames.

lib/src/source_registry.dart

Index: lib/src/source_registry.dart
diff --git a/lib/src/source_registry.dart b/lib/src/source_registry.dart
index 7c2513289fa33a92c51b93c2e2d0e9f990abcded..be49746dc0b3eb824342b7c2aaaef6e74fdf1d3c 100644
--- a/lib/src/source_registry.dart
+++ b/lib/src/source_registry.dart
@@ -2,7 +2,6 @@
 // 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.dart';
 import 'source.dart';
 import 'source/git.dart';
 import 'source/hosted.dart';
@@ -46,22 +45,6 @@ class SourceRegistry {
     _default = hosted;
   }
 
-  /// Returns whether [id1] and [id2] refer to the same package, including
-  /// validating that their descriptions are equivalent.
-  bool idsEqual(PackageId id1, PackageId id2) {
-    if (id1 != id2) return false;
-    if (id1 == null && id2 == null) return true;
-    return idDescriptionsEqual(id1, id2);
-  }
-
-  /// Returns whether [id1] and [id2] have the same source and description.
-  ///
-  /// This doesn't check whether the name or versions are equal.
-  bool idDescriptionsEqual(PackageId id1, PackageId id2) {
-    if (id1.source != id2.source) return false;
-    return this[id1.source].descriptionsEqual(id1.description, id2.description);
-  }
-
   /// Sets the default source.
   ///
   /// This takes a string, which must be the name of a registered source.