Switch to standard integer types in chrome/browser/, part 4 of 4.

chrome/browser/sync_file_system/sync_event_observer.h

 // Copyright (c) 2012 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.
 
 #ifndef CHROME_BROWSER_SYNC_FILE_SYSTEM_SYNC_EVENT_OBSERVER_H_
 #define CHROME_BROWSER_SYNC_FILE_SYSTEM_SYNC_EVENT_OBSERVER_H_
 
 #include <string>
 
+#include "base/macros.h"
 #include "chrome/browser/sync_file_system/file_status_observer.h"
 #include "chrome/browser/sync_file_system/sync_service_state.h"
 
 class GURL;
 
 namespace storage {
 class FileSystemURL;
 }
 
 namespace sync_file_system {
@@ skipping 17 matching lines @@
                             SyncAction action,
                             SyncDirection direction) = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(SyncEventObserver);
 };
 
 }  // namespace sync_file_system
 
 #endif  // CHROME_BROWSER_SYNC_FILE_SYSTEM_SYNC_EVENT_OBSERVER_H_