Adjusts dart2js backend to handle method type arguments.

tests/language/generic_methods_function_type_test.dart

Index: tests/language/generic_methods_function_type_test.dart
diff --git a/tests/language/generic_methods_function_type_test.dart b/tests/language/generic_methods_function_type_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..17a4c1a366c1caec0ce7b5757af48f2270e4d99c
--- /dev/null
+++ b/tests/language/generic_methods_function_type_test.dart
@@ -0,0 +1,23 @@
+// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+//
+// DartOptions=--generic-method-syntax
+
+/// Dart test on the usage of method type arguments in a function typed
+/// parameter declaration.
+
+library generic_methods_function_type_test;
+
+import "package:expect/expect.dart";
+
+class C<V> {
+  U m1<U>(U f(V v), V v) => f(v);
+  V m2<U>(V f(U v), U u) => f(u);
+}
+
+main() {
+  Expect.equals(new C<int>().m1<int>((x) => x, 10), 10);
+  Expect.equals(new C<int>().m2<int>((x) => x, 20), 20);
+}
+