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utils/pub/utils.dart

Index: utils/pub/utils.dart
diff --git a/utils/pub/utils.dart b/utils/pub/utils.dart
index 4eb840a7a1777121c63ecbe8c475f6d0b2789279..097f60ff68a31a67d38d5651b9c1a36cc01cc8dc 100644
--- a/utils/pub/utils.dart
+++ b/utils/pub/utils.dart
@@ -24,6 +24,11 @@ class Pair<E, F> {
   Pair(this.first, this.last);
 
   String toString() => '($first, $last)';
+
+  bool operator==(other) {
+    if (other is! Pair) return false;
+    return other.first == first && other.last == last;
+  }
 }
 
 // TODO(rnystrom): Move into String?