Implement type inference for super initializers.

pkg/front_end/testcases/inference/super_initializer.dart

Index: pkg/front_end/testcases/inference/super_initializer.dart
diff --git a/pkg/front_end/testcases/inference/super_initializer.dart b/pkg/front_end/testcases/inference/super_initializer.dart
new file mode 100644
index 0000000000000000000000000000000000000000..1f537825d759865a07f2350934c4e45249e1d974
--- /dev/null
+++ b/pkg/front_end/testcases/inference/super_initializer.dart
@@ -0,0 +1,18 @@
+// 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.
+
+/*@testedFeatures=inference*/
+library test;
+
+T f<T>() => null;
+
+class C extends B {
+  C() : super(/*@typeArgs=int*/ f());
+}
+
+class B {
+  B(int x);
+}
+
+main() {}