Update yield warnings.

pkg/compiler/lib/src/core_types.dart

Index: pkg/compiler/lib/src/core_types.dart
diff --git a/pkg/compiler/lib/src/core_types.dart b/pkg/compiler/lib/src/core_types.dart
index 291978d9e67ef9d8b1608530b922a0f85320e0d8..079c69e8d2f88ebf16034a4abcdcf421111f38f0 100644
--- a/pkg/compiler/lib/src/core_types.dart
+++ b/pkg/compiler/lib/src/core_types.dart
@@ -40,4 +40,16 @@ abstract class CoreTypes {
   /// [keyType] and [valueType] as its type arguments.
   InterfaceType mapType([DartType keyType = const DynamicType(),
                          DartType valueType = const DynamicType()]);
+
+  /// Returns an instance of the `List` type defined in 'dart:core' with

[floitsch, 2015/02/04 15:44:57]

of the `Iterable` type defined in...

[Johnni Winther, 2015/02/05 08:48:32]

Done.

+  /// [elementType] as its type argument.
+  InterfaceType iterableType([DartType elementType = const DynamicType()]);
+
+  /// Returns an instance of the `List` type defined in 'dart:async' with

[floitsch, 2015/02/04 15:44:57]

Future type.

[Johnni Winther, 2015/02/05 08:48:32]

Done.

+  /// [elementType] as its type argument.
+  InterfaceType futureType([DartType elementType = const DynamicType()]);
+
+  /// Returns an instance of the `Stream` type defined in 'dart:async' with
+  /// [elementType] as its type argument.
+  InterfaceType streamType([DartType elementType = const DynamicType()]);
 }