Format all files under tools and utils directory.

tools/dartium/download_file.dart

 // Copyright (c) 2013, 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:async';
 import 'dart:io';
 
 Future downloadFile(Uri url, String destination) {
   var client = new HttpClient();
-  return client.getUrl(url)
-    .then((HttpClientRequest request) => request.close())
-    .then((HttpClientResponse response) {
-      if (response.statusCode != HttpStatus.OK) {
-        throw new Exception("Http status code (${response.statusCode}) "
-                            "was not 200. Aborting.");
-      }
-      var sink = new File(destination).openWrite();
-      return response.pipe(sink).then((_) {
-        client.close();
+  return client
+      .getUrl(url)
+      .then((HttpClientRequest request) => request.close())
+      .then((HttpClientResponse response) {
+    if (response.statusCode != HttpStatus.OK) {
+      throw new Exception("Http status code (${response.statusCode}) "
+          "was not 200. Aborting.");
+    }
+    var sink = new File(destination).openWrite();
+    return response.pipe(sink).then((_) {
+      client.close();
     });
   });
 }
 
 void main(List<String> arguments) {
   die(String message) {
     print(message);
     exit(1);
   }
 
   if (arguments.length != 2) {
     var scriptName = Platform.script.pathSegments.last;
     die("Usage dart $scriptName <url> <destination-file>");
   }
 
   var url = Uri.parse(arguments[0]);
   var destination = arguments[1];
 
   if (!['http', 'https'].contains(url.scheme)) {
     die("Unsupported scheme in uri $url");
   }
 
   print("Downloading $url to $destination.");
   downloadFile(url, destination).then((_) {
     print("Download finished.");
   }).catchError((error) {
     die("An unexpected error occured: $error.");
   });
 }