Infer the return types of local functions where appropriate.

pkg/front_end/testcases/inference/infer_local_function_referenced_before_declaration.dart

Index: pkg/front_end/testcases/inference/infer_local_function_referenced_before_declaration.dart
diff --git a/pkg/front_end/testcases/inference/infer_local_function_referenced_before_declaration.dart b/pkg/front_end/testcases/inference/infer_local_function_referenced_before_declaration.dart
new file mode 100644
index 0000000000000000000000000000000000000000..3250f29739d1ee163272ddfdffac2d618d45e523
--- /dev/null
+++ b/pkg/front_end/testcases/inference/infer_local_function_referenced_before_declaration.dart
@@ -0,0 +1,20 @@
+// 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;
+
+test() {
+  /*@returnType=dynamic*/ f() => /*error:REFERENCED_BEFORE_DECLARATION*/ g();
+
+  // Ignore inference for g since Fasta doesn't infer it due to the circularity,
+  // and that's ok.
+  /*@testedFeatures=none*/
+  g() => 0;
+  /*@testedFeatures=inference*/
+
+  var /*@type=() -> dynamic*/ v = f;
+}
+
+main() {}