Revert "Make Map constructors return LinkedHashMap."

tests/corelib/map_from_test.dart

Index: tests/corelib/map_from_test.dart
diff --git a/tests/corelib/map_from_test.dart b/tests/corelib/map_from_test.dart
index 41db674100ee8a2c1afaaa23306a81b7d71409cd..21597fbef38dd38fde9f0aa0ce85fdebc55cd88a 100644
--- a/tests/corelib/map_from_test.dart
+++ b/tests/corelib/map_from_test.dart
@@ -9,7 +9,6 @@ import 'dart:collection';
 main() {
   testWithConstMap();
   testWithNonConstMap();
-  testWithHashMap();
   testWithLinkedMap();
 }
 
@@ -17,8 +16,8 @@ testWithConstMap() {
   var map = const { 'b': 42, 'a': 43 };
   var otherMap = new Map.from(map);
   Expect.isTrue(otherMap is Map);
-  Expect.isTrue(otherMap is! HashMap);
-  Expect.isTrue(otherMap is LinkedHashMap);
+  Expect.isTrue(otherMap is HashMap);
+  Expect.isTrue(otherMap is !LinkedHashMap);
 
   Expect.equals(2, otherMap.length);
   Expect.equals(2, otherMap.keys.length);
@@ -38,8 +37,8 @@ testWithNonConstMap() {
   var map = { 'b': 42, 'a': 43 };
   var otherMap = new Map.from(map);
   Expect.isTrue(otherMap is Map);
-  Expect.isTrue(otherMap is! HashMap);
-  Expect.isTrue(otherMap is LinkedHashMap);
+  Expect.isTrue(otherMap is HashMap);
+  Expect.isTrue(otherMap is !LinkedHashMap);
 
   Expect.equals(2, otherMap.length);
   Expect.equals(2, otherMap.keys.length);
@@ -69,18 +68,6 @@ testWithNonConstMap() {
   Expect.equals(3, otherMap.values.length);
 }
 
-testWithHashMap() {
-  var map = const { 'b': 1, 'a': 2, 'c': 3 };
-  var otherMap = new HashMap.from(map);
-  Expect.isTrue(otherMap is Map);
-  Expect.isTrue(otherMap is HashMap);
-  Expect.isTrue(otherMap is !LinkedHashMap);
-  var i = 1;
-  for (var val in map.values) {
-    Expect.equals(i++, val);
-  }
-}
-
 testWithLinkedMap() {
   var map = const { 'b': 1, 'a': 2, 'c': 3 };
   var otherMap = new LinkedHashMap.from(map);