Implement type variables on local function declarations and expressions.

pkg/front_end/testcases/local_generic_function.dart

Index: pkg/front_end/testcases/local_generic_function.dart
diff --git a/pkg/front_end/testcases/local_generic_function.dart b/pkg/front_end/testcases/local_generic_function.dart
new file mode 100644
index 0000000000000000000000000000000000000000..a251f14e491e996577c357e4a6efcd476726bb00
--- /dev/null
+++ b/pkg/front_end/testcases/local_generic_function.dart
@@ -0,0 +1,8 @@
+// Copyright (c) 2017, 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.
+
+main() {
+  T f<T>(List<T> l) => l[0];
+  var x = f([0]);
+}