Revert "Make Map constructors return LinkedHashMap."

tests/corelib/map_from_iterable_test.dart

Index: tests/corelib/map_from_iterable_test.dart
diff --git a/tests/corelib/map_from_iterable_test.dart b/tests/corelib/map_from_iterable_test.dart
index c5aa0c0faae72eea5f8fca19cd18b87bc53f4720..4d0468db66a48f55f4dbe162491cb47d5b90355b 100644
--- a/tests/corelib/map_from_iterable_test.dart
+++ b/tests/corelib/map_from_iterable_test.dart
@@ -19,7 +19,7 @@ void defaultFunctionValuesTest() {
   var map = new Map.fromIterable([1, 2, 3]);
 
   Expect.isTrue(map is Map);
-  Expect.isTrue(map is LinkedHashMap);
+  Expect.isTrue(map is HashMap);
 
   Expect.equals(3, map.length);
   Expect.equals(3, map.keys.length);
@@ -34,7 +34,7 @@ void defaultKeyFunctionTest() {
   var map = new Map.fromIterable([1, 2, 3], value: (x) => x + 1);
 
   Expect.isTrue(map is Map);
-  Expect.isTrue(map is LinkedHashMap);
+  Expect.isTrue(map is HashMap);
 
   Expect.equals(3, map.length);
   Expect.equals(3, map.keys.length);
@@ -49,7 +49,7 @@ void defaultValueFunctionTest() {
   var map = new Map.fromIterable([1, 2, 3], key: (x) => x + 1);
 
   Expect.isTrue(map is Map);
-  Expect.isTrue(map is LinkedHashMap);
+  Expect.isTrue(map is HashMap);
 
   Expect.equals(3, map.length);
   Expect.equals(3, map.keys.length);
@@ -64,8 +64,9 @@ void noDefaultValuesTest() {
   var map = new Map.fromIterable([1, 2, 3],
       key: (x) => x + 1, value: (x) => x - 1);
 
+
   Expect.isTrue(map is Map);
-  Expect.isTrue(map is LinkedHashMap);
+  Expect.isTrue(map is HashMap);
 
   Expect.equals(3, map.length);
   Expect.equals(3, map.keys.length);
@@ -79,7 +80,7 @@ void noDefaultValuesTest() {
 void emptyIterableTest() {
   var map = new Map.fromIterable([]);
   Expect.isTrue(map is Map);
-  Expect.isTrue(map is LinkedHashMap);
+  Expect.isTrue(map is HashMap);
 
   Expect.equals(0, map.length);
   Expect.equals(0, map.keys.length);
@@ -90,7 +91,7 @@ void equalElementsTest() {
   var map = new Map.fromIterable([1, 2, 2], key: (x) => x + 1);
 
   Expect.isTrue(map is Map);
-  Expect.isTrue(map is LinkedHashMap);
+  Expect.isTrue(map is HashMap);
 
   Expect.equals(2, map.length);
   Expect.equals(2, map.keys.length);