Assume a method can be torn off, if it's accessible through reflection.

sdk/lib/_internal/compiler/implementation/mirrors/dart2js_member_mirrors.dart

Index: sdk/lib/_internal/compiler/implementation/mirrors/dart2js_member_mirrors.dart
diff --git a/sdk/lib/_internal/compiler/implementation/mirrors/dart2js_member_mirrors.dart b/sdk/lib/_internal/compiler/implementation/mirrors/dart2js_member_mirrors.dart
index f91014aea99d6dcdde78c403d6e2384dcce941cd..be9fa8c365b2a3fb87a2ff3870f1f3889c25469e 100644
--- a/sdk/lib/_internal/compiler/implementation/mirrors/dart2js_member_mirrors.dart
+++ b/sdk/lib/_internal/compiler/implementation/mirrors/dart2js_member_mirrors.dart
@@ -108,6 +108,7 @@ class Dart2JsMethodMirror extends Dart2JsMemberMirror
       // Simple name is 'unary-'.
       simpleName = 'unary-';
     } else if (simpleName.startsWith('operator\$')) {

[herhut, 2014/05/09 07:23:18]

Why does this not use the simpleName != function.name method here?

[floitsch, 2014/05/09 07:53:19]

I wanted to keep the CL focused.
We will fix this part in a different CL (either by doing the same check as in
the container_builder, or by using the fix of issue 18740 which should add an
isOperator getter to the element).

+      // TODO(18740, johnniwinther): this fails for methods like `operator$foo`.
       String str = simpleName.substring(9);
       simpleName = 'operator';
       kind = Dart2JsMethodKind.OPERATOR;