Cleanup in //runtime/bin

runtime/bin/file_system_watcher.h

 // 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.
 
 #ifndef BIN_FILE_SYSTEM_WATCHER_H_
 #define BIN_FILE_SYSTEM_WATCHER_H_
 
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <stdio.h>
 #include <sys/types.h>
 
 #include "bin/builtin.h"
 #include "bin/dartutils.h"
 
-
 namespace dart {
 namespace bin {
 
 class FileSystemWatcher {
  public:
   enum EventType {
     kCreate = 1 << 0,
     kModifyContent = 1 << 1,
     kDelete = 1 << 2,
     kMove = 1 << 3,
@@ skipping 22 matching lines @@
 
  private:
   DISALLOW_COPY_AND_ASSIGN(FileSystemWatcher);
 };
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // BIN_FILE_SYSTEM_WATCHER_H_