`analyzer_cli` move to SDK.

pkg/analyzer_cli/test/data/super_mixin_example.dart

Index: pkg/analyzer_cli/test/data/super_mixin_example.dart
diff --git a/tests/language/issue13179_test.dart b/pkg/analyzer_cli/test/data/super_mixin_example.dart
similarity index 51%
copy from tests/language/issue13179_test.dart
copy to pkg/analyzer_cli/test/data/super_mixin_example.dart
index 0439ceab895f5925234763b90cb323007bc19b14..ea9048680fdecd48d5d63c715db8599fecb0a2fd 100644
--- a/tests/language/issue13179_test.dart
+++ b/pkg/analyzer_cli/test/data/super_mixin_example.dart
@@ -2,18 +2,17 @@
 // 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.
 
-import "package:expect/expect.dart";
-
-int count = 0;
+/// This produces errors normally, but --supermixin disables them.
+class Test extends Object with C {
+  void foo() {}
+}
 
-void f([void f([x]) = f]) {
-  count++;
-  if (f != null) {
-    f(null);
-  }
+abstract class B {
+  void foo();
 }
 
-main() {
-  f();
-  Expect.equals(2, count);
+abstract class C extends B {
+  void bar() {
+    super.foo();
+  }
 }