Revert "Cleanup TypedSelector.appliesUnnamed"

pkg/compiler/lib/src/js_emitter/old_emitter/class_emitter.dart

 // Copyright (c) 2013, 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.
 
 part of dart2js.js_emitter;
 
 class ClassEmitter extends CodeEmitterHelper {
 
   ClassStubGenerator get _stubGenerator =>
       new ClassStubGenerator(compiler, namer, backend);
@@ skipping 464 matching lines @@
   }
 
   bool fieldNeedsSetter(VariableElement field) {
     assert(field.isField);
     if (fieldAccessNeverThrows(field)) return false;
     return (!field.isFinal && !field.isConst)
         && (backend.shouldRetainSetter(field)
             || compiler.codegenWorld.hasInvokedSetter(field, compiler.world));
   }
 
+  // We never access a field in a closure (a captured variable) without knowing
+  // that it is there.  Therefore we don't need to use a getter (that will throw
+  // if the getter method is missing), but can always access the field directly.
   static bool fieldAccessNeverThrows(VariableElement field) {
-    return
-        // Exceptions for missing static and top level fields are generated at
-        // compile time.
-        field.isStatic || field.isTopLevel ||
-        // We never access a field in a closure (a captured variable) without
-        // knowing that it is there.  Therefore we don't need to use a getter
-        // (that will throw if the getter method is missing), but can always
-        // access the field directly.
-        field is ClosureFieldElement;
+    return field is ClosureFieldElement;
   }
 
   bool canAvoidGeneratedCheckedSetter(VariableElement member) {
     // We never generate accessors for top-level/static fields.
     if (!member.isInstanceMember) return true;
     DartType type = member.type;
     return type.treatAsDynamic || (type.element == compiler.objectClass);
   }
 
   void generateCheckedSetter(Element member,
@@ skipping 55 matching lines @@
         ? new Selector.getter(member.name, member.library)
         : new Selector.setter(member.name, member.library);
     String reflectionName = emitter.getReflectionName(selector, name);
     if (reflectionName != null) {
       var reflectable =
           js(backend.isAccessibleByReflection(member) ? '1' : '0');
       builder.addProperty('+$reflectionName', reflectable);
     }
   }
 }