Format all files under tools and utils directory.

tools/dart2js/sourceMapViewer/bin/source_map_viewer.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.
 
 import 'dart:io';
 import 'package:http_server/http_server.dart' as http_server;
 import 'package:route/server.dart';
 import 'package:path/path.dart';
 import 'package:http_server/http_server.dart';
 
@@ skipping 53 matching lines @@
 // /file takes a parameter [path] and serves the content of the specified file
 //  in path relative to [dir]
 //
 // /map serves the name of the map file such that its content can be requested
 // with a /file request as above.
 void startServer() {
   String root = fromUri(Platform.script.resolve('../build/web/'));
   Directory directory = new Directory(root);
   if (!directory.existsSync()) {
     print("Directory '$root' does not exist. "
-          "Run 'pub build' to generate the output.");
+        "Run 'pub build' to generate the output.");
     exit(-1);
   }
 
   // Use port 0 to get an ephemeral port.
   int port = 0;
   HttpServer.bind(InternetAddress.LOOPBACK_IP_V4, port).then((server) {
     port = server.port;
     print("Source mapping server is running on "
-           "'http://${server.address.address}:$port/'");
+        "'http://${server.address.address}:$port/'");
     Router router = new Router(server)
-                ..serve('/file').listen(handleFile)
-                ..serve('/map').listen(handleSourceMapFile);
+      ..serve('/file').listen(handleFile)
+      ..serve('/map').listen(handleSourceMapFile);
 
     // Set up default handler. This will serve files from our 'build'
     // directory. Disable jail root, as packages are local symlinks.
     VirtualDirectory virDir = new http_server.VirtualDirectory(root)
       ..jailRoot = false
       ..allowDirectoryListing = true;
 
     virDir.directoryHandler = (dir, request) {
       // Redirect directory requests to index.html files.
       Uri indexUri = new Uri.file(dir.path).resolve('display.html');
@@ skipping 29 matching lines @@
       command = '/usr/bin/google-chrome';
     }
   }
 
   print('Starting browser: ${command} ${url}');
   Process.run(command, ['$url']).then((ProcessResult result) {
     if (result.exitCode != 0) {
       print(result.stderr);
     }
   });
-}
+}