Run dartfmt on dart2js codebase.

pkg/compiler/tool/track_memory.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.
 
 /// A script to track the high water-mark of memory usage of an application.
 /// To monitor how much memory dart2js is using, run dart2js as follows:
 ///
 ///     DART_VM_OPTIONS=--observe dart2js ...
 ///
 /// and run this script immediately after.
@@ skipping 48 matching lines @@
   var isolateId = vm['isolates'][0]['id'];
   var isolate = await _sendMessage('getIsolate', {'isolateId': isolateId});
   bool isPaused = isolate['pauseEvent']['kind'] == 'PauseStart';
   if (isPaused) _resumeIsolate(isolateId);
 }
 
 /// Send a message to the vm service.
 Future _sendMessage(String method, [Map args = const {}]) {
   var id = _requestId++;
   _pendingResponses[id] = new Completer();
-  socket.add(JSON.encode(
-      {'jsonrpc': '2.0', 'id': '$id', 'method': '$method', 'params': args,}));
+  socket.add(JSON.encode({
+    'jsonrpc': '2.0',
+    'id': '$id',
+    'method': '$method',
+    'params': args,
+  }));
   return _pendingResponses[id].future;
 }
 
 /// Handle all responses
 _handleResponse(String s) {
   var json = JSON.decode(s);
   if (json['method'] != 'streamNotify') {
     var id = json['id'];
     if (id is String) id = int.parse(id);
     if (id == null || !_pendingResponses.containsKey(id)) return;
@@ skipping 100 matching lines @@
 _printHeader() {
   print('''
 Memory usage:
  new generation   | old generation   | total            | max
   in-use/capacity |  in-use/capacity |  in-use/capacity |  in-use/capacity ''');
 }
 
 const _RED = '\x1b[31m';
 const _GREEN = '\x1b[32m';
 const _NONE = '\x1b[0m';