Temporarily reverting class field and method name minification.

sdk/lib/_internal/compiler/implementation/lib/js_helper.dart

Index: sdk/lib/_internal/compiler/implementation/lib/js_helper.dart
diff --git a/sdk/lib/_internal/compiler/implementation/lib/js_helper.dart b/sdk/lib/_internal/compiler/implementation/lib/js_helper.dart
index ea31fe24088f2941034de76a538745bf5acd89e5..43b11e0f57bbb94a3ec202d3d5484ad9747ad067 100644
--- a/sdk/lib/_internal/compiler/implementation/lib/js_helper.dart
+++ b/sdk/lib/_internal/compiler/implementation/lib/js_helper.dart
@@ -941,9 +941,6 @@ throwAbstractClassInstantiationError(className) {
  *
  * Some native exceptions are mapped to new Dart instances, others are
  * returned unmodified.
- *
- * TODO(erikcorry): Fix this to produce consistent result regardless of
- * minification.
  */
 unwrapException(ex) {
   // Note that we are checking if the object has the property. If it