Dart: Renames dart:mojo_blah -> mojo:blah

examples/dart/console_example/main.dart

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 import 'dart:async';
-import 'dart:mojo_application';
-import 'dart:mojo_bindings';
-import 'dart:mojo_core';
+import 'mojo:application';
+import 'mojo:bindings';
+import 'mojo:core';
 
 import 'package:mojo/services/console/public/interfaces/console.mojom.dart';
 
 class ConsoleApplication extends Application {
   ConsoleProxy _proxy;
 
   ConsoleApplication.fromHandle(MojoHandle handle) : super.fromHandle(handle);
 
   void initialize(List<String> args, String url) {
     _proxy = new ConsoleProxy.unbound();
     connectToService("mojo:console", _proxy);
     run();
   }
 
   run() async {
     var result = await _proxy.readLine();
     await _proxy.printLines([result.line]);
 
     _proxy.close();
     close();
   }
 }
 
 main(List args) {
   var appHandle = new MojoHandle(args[0]);
   var consoleApplication = new ConsoleApplication.fromHandle(appHandle);
   consoleApplication.listen();
 }