dart2js: Refactoring, documentation, and a few bugfixes in Namer class.

pkg/compiler/lib/src/js_emitter/class_stub_generator.dart

 // Copyright (c) 2014, 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 ClassStubGenerator {
   final Namer namer;
   final Compiler compiler;
   final JavaScriptBackend backend;
@@ skipping 44 matching lines @@
     bool isInterceptedMethod = backend.isInterceptedMethod(member);
     bool isInterceptorClass =
         backend.isInterceptorClass(member.enclosingClass);
 
     const String receiverArgumentName = r'$receiver';
 
     jsAst.Expression buildGetter() {
       jsAst.Expression receiver =
           js(isInterceptorClass ? receiverArgumentName : 'this');
       if (member.isGetter) {
-        String getterName = namer.getterName(member);
+        String getterName = namer.getterForElement(member);
         if (isInterceptedMethod) {
           return js('this.#(#)', [getterName, receiver]);
         }
         return js('#.#()', [receiver, getterName]);
       } else {
         String fieldName = namer.instanceFieldPropertyName(member);
         return js('#.#', [receiver, fieldName]);
       }
     }
 
@@ skipping 202 matching lines @@
           ? function() {
               if (cache === void 0) cache = #tearOff(
                   this, funcs, reflectionInfo, true, [], name).prototype;
               return cache;
             }
           : tearOffGetter(funcs, reflectionInfo, name, isIntercepted);
     }''',  {'tearOff': tearOffAccessExpression});
 
   return <jsAst.Statement>[tearOffGetter, tearOff];
 }