dart2js: Use an abstract Name class for names in the generated JavaScript ast.

pkg/compiler/lib/src/js_emitter/interceptor_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 InterceptorStubGenerator {
   final Compiler compiler;
   final Namer namer;
   final JavaScriptBackend backend;
@@ skipping 269 matching lines @@
         return js.statement(r'''
           if (# && !receiver.immutable$list &&
               (a0 >>> 0) === a0 && a0 < receiver.length)
             return receiver[a0] = a1;
           ''', typeCheck);
       }
     }
     return null;
   }
 
-  jsAst.Expression generateOneShotInterceptor(String name) {
+  jsAst.Expression generateOneShotInterceptor(jsAst.Name name) {
     Selector selector = backend.oneShotInterceptors[name];
     Set<ClassElement> classes =
         backend.getInterceptedClassesOn(selector.name);
-    String getInterceptorName = namer.nameForGetInterceptor(classes);
+    jsAst.Name getInterceptorName = namer.nameForGetInterceptor(classes);
 
     List<String> parameterNames = <String>[];
     parameterNames.add('receiver');
 
     if (selector.isSetter) {
       parameterNames.add('value');
     } else {
       for (int i = 0; i < selector.argumentCount; i++) {
         parameterNames.add('a$i');
       }
     }
 
-    String invocationName = backend.namer.invocationName(selector);
+    jsAst.Name invocationName = backend.namer.invocationName(selector);
     String globalObject = namer.globalObjectFor(backend.interceptorsLibrary);
 
     jsAst.Statement optimizedPath =
         _fastPathForOneShotInterceptor(selector, classes);
     if (optimizedPath == null) optimizedPath = js.statement(';');
 
     return js(
         'function(#) { #; return #.#(receiver).#(#) }',
         [parameterNames,
          optimizedPath,
@@ skipping 45 matching lines @@
 
           var map = new jsAst.ObjectInitializer(properties);
           elements.add(map);
         }
       }
     }
 
     return new jsAst.ArrayInitializer(elements);
   }
 }