Change the field and constructor parameter types of NoSuchMethodError to Symbol.

tests/corelib/linked_hash_map_from_iterable_test.dart

Index: tests/corelib/linked_hash_map_from_iterable_test.dart
diff --git a/tests/corelib/linked_hash_map_from_iterable_test.dart b/tests/corelib/linked_hash_map_from_iterable_test.dart
index 02c9029c773b7e6500ffaf4eb47f8d57f4a16ca4..a8de693c1525c28d1b507dda745900a5f7ff9b54 100644
--- a/tests/corelib/linked_hash_map_from_iterable_test.dart
+++ b/tests/corelib/linked_hash_map_from_iterable_test.dart
@@ -101,12 +101,17 @@ void equalElementsTest() {
 }
 
 void genericTypeTest() {
-  var map = new LinkedHashMap<int, String>.fromIterable([1, 2, 3], value: (x) => '$x');
+  var map = new LinkedHashMap<int, String>.fromIterable(
+      <int>[1, 2, 3], value: (x) => '$x');
   Expect.isTrue(map is Map<int, String>);
   Expect.isTrue(map is LinkedHashMap<int, String>);
 
+  map = new LinkedHashMap<String, String>.fromIterable(
+      <int>[1, 2, 3], key: (x) => '$x', value: (x) => '$x');
+  Expect.isTrue(map is Map<String, String>);
+  Expect.isTrue(map is LinkedHashMap<String, String>);
+
   // Make sure it is not just LinkedHashMap<dynamic, dynamic>.
-  Expect.isFalse(map is LinkedHashMap<String, dynamic>);
+  Expect.isFalse(map is LinkedHashMap<int, dynamic>);
   Expect.isFalse(map is LinkedHashMap<dynamic, int>);
 }
-