refactor emitMemberName to be used more consistently

lib/src/utils.dart

 // Copyright (c) 2015, 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.
 
 /// Holds a couple utility functions used at various places in the system.
 library dev_compiler.src.utils;
 
 import 'dart:io';
 
 import 'package:path/path.dart' as path;
 import 'package:analyzer/src/generated/ast.dart'
     show
         ImportDirective,
         ExportDirective,
         PartDirective,
         CompilationUnit,
         Identifier,
         AnnotatedNode,
         AstNode,
         Expression,
         SimpleIdentifier;
+import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/engine.dart'
     show ParseDartTask, AnalysisContext;
+import 'package:analyzer/src/generated/resolver.dart' show TypeProvider;
 import 'package:analyzer/src/generated/source.dart' show Source;
-import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/analyzer.dart' show parseDirectives;
 import 'package:crypto/crypto.dart' show CryptoUtils, MD5;
 import 'package:source_span/source_span.dart';
 import 'package:yaml/yaml.dart';
 
 import 'codegen/js_names.dart' show invalidJSVariableName;
 
 bool isDartPrivateLibrary(LibraryElement library) {
   var uri = library.source.uri;
   if (uri.scheme != "dart") return false;
@@ skipping 301 matching lines @@
   // TODO(jmesserly): can we implement this without repeatedly reading pubspec?
   // It seems like we should know our package's root directory without needing
   // to search like this.
   var pubspec =
       loadYaml(new File(path.join(dir, 'pubspec.yaml')).readAsStringSync());
 
   // Ensure this is loaded from the dev_compiler package.
   if (pubspec['name'] != 'dev_compiler') return null;
   return path.join('dev_compiler', 'runtime', filename);
 }
+
+InterfaceType fillDynamicTypeArgs(InterfaceType t, TypeProvider types) =>
+    t.substitute4(new List.filled(t.typeArguments.length, types.dynamicType));