Generated front_end/testcases/inference test files from Analyzer tests.

pkg/front_end/testcases/inference/infer_prefix_expression_custom.dart

Index: pkg/front_end/testcases/inference/infer_prefix_expression_custom.dart
diff --git a/pkg/front_end/testcases/inference/infer_prefix_expression_custom.dart b/pkg/front_end/testcases/inference/infer_prefix_expression_custom.dart
new file mode 100644
index 0000000000000000000000000000000000000000..0a986fb23842b0868045a22a10100251be13b1ac
--- /dev/null
+++ b/pkg/front_end/testcases/inference/infer_prefix_expression_custom.dart
@@ -0,0 +1,16 @@
+// 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;
+
+class A {
+  A();
+  int operator ~() => 1;
+  double operator -() => 2.0;
+}
+
+var /*@topType=A*/ a = new A();
+var /*@topType=int*/ v_complement = ~a;
+var /*@topType=double*/ v_negate = -a;