Fix bad diagnostic positions when inlining super constructors.

dart/tests/compiler/dart2js_extra/inline_position_crash_test.dart

Index: dart/tests/compiler/dart2js_extra/inline_position_crash_test.dart
diff --git a/dart/tests/language/compile_time_constant7_test.dart b/dart/tests/compiler/dart2js_extra/inline_position_crash_test.dart
similarity index 69%
copy from dart/tests/language/compile_time_constant7_test.dart
copy to dart/tests/compiler/dart2js_extra/inline_position_crash_test.dart
index 25bf20dff843b174a4a75f8bb0cf2acab516149c..d3881aa2017c97d6d4d1493557bdf2dd29391401 100644
--- a/dart/tests/language/compile_time_constant7_test.dart
+++ b/dart/tests/compiler/dart2js_extra/inline_position_crash_test.dart
@@ -2,13 +2,12 @@
 // 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.
 
-class A {
-  const A();
-  toString() => "a";
-}
+#source('inline_position_crash_source.dart');
 
-const a = const A();
+class Sub extends Super {
+  Sub() : super();
+}
 
 main() {
-  Expect.equals("a", a.toString());
+  new Sub();
 }