Move common identifiers, names and selectors to a separate library.

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 149 matching lines @@
     List<String> parameterNames =
         new List.generate(selector.argumentCount, (i) => '\$$i');
 
     List<jsAst.Expression> argNames =
         selector.callStructure.getOrderedNamedArguments().map((String name) =>
             js.string(name)).toList();
 
     jsAst.Name methodName = namer.asName(selector.invocationMirrorMemberName);
     jsAst.Name internalName = namer.invocationMirrorInternalName(selector);
 
-    assert(backend.isInterceptedName(Compiler.NO_SUCH_METHOD));
+    assert(backend.isInterceptedName(Identifiers.noSuchMethod_));
     bool isIntercepted = backend.isInterceptedName(selector.name);
     jsAst.Expression expression =
         js('''this.#noSuchMethodName(#receiver,
                     #createInvocationMirror(#methodName,
                                             #internalName,
                                             #type,
                                             #arguments,
                                             #namedArguments))''',
            {'receiver': isIntercepted ? r'$receiver' : 'this',
             'noSuchMethodName': namer.noSuchMethodName,
@@ skipping 107 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];
 }