Standardize usage of virtual/override/final in chrome/browser/sync_file_system/

chrome/browser/sync_file_system/local/local_file_change_tracker.h

 // Copyright 2013 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_LOCAL_LOCAL_FILE_CHANGE_TRACKER_H_
 #define CHROME_BROWSER_SYNC_FILE_SYSTEM_LOCAL_LOCAL_FILE_CHANGE_TRACKER_H_
 
 #include <deque>
 #include <map>
 #include <string>
@@ skipping 30 matching lines @@
 // Owned by FileSystemContext.
 class LocalFileChangeTracker : public storage::FileUpdateObserver,
                                public storage::FileChangeObserver {
  public:
   // |file_task_runner| must be the one where the observee file operations run.
   // (So that we can make sure DB operations are done before actual update
   // happens)
   LocalFileChangeTracker(const base::FilePath& base_path,
                          leveldb::Env* env_override,
                          base::SequencedTaskRunner* file_task_runner);
-  virtual ~LocalFileChangeTracker();
+  ~LocalFileChangeTracker() override;
 
   // FileUpdateObserver overrides.
-  virtual void OnStartUpdate(const storage::FileSystemURL& url) override;
-  virtual void OnUpdate(const storage::FileSystemURL& url,
-                        int64 delta) override {}
-  virtual void OnEndUpdate(const storage::FileSystemURL& url) override;
+  void OnStartUpdate(const storage::FileSystemURL& url) override;
+  void OnUpdate(const storage::FileSystemURL& url, int64 delta) override {}
+  void OnEndUpdate(const storage::FileSystemURL& url) override;
 
   // FileChangeObserver overrides.
-  virtual void OnCreateFile(const storage::FileSystemURL& url) override;
-  virtual void OnCreateFileFrom(const storage::FileSystemURL& url,
-                                const storage::FileSystemURL& src) override;
-  virtual void OnRemoveFile(const storage::FileSystemURL& url) override;
-  virtual void OnModifyFile(const storage::FileSystemURL& url) override;
-  virtual void OnCreateDirectory(const storage::FileSystemURL& url) override;
-  virtual void OnRemoveDirectory(const storage::FileSystemURL& url) override;
+  void OnCreateFile(const storage::FileSystemURL& url) override;
+  void OnCreateFileFrom(const storage::FileSystemURL& url,
+                        const storage::FileSystemURL& src) override;
+  void OnRemoveFile(const storage::FileSystemURL& url) override;
+  void OnModifyFile(const storage::FileSystemURL& url) override;
+  void OnCreateDirectory(const storage::FileSystemURL& url) override;
+  void OnRemoveDirectory(const storage::FileSystemURL& url) override;
 
   // Retrieves an array of |url| which have more than one pending changes.
   // If |max_urls| is non-zero (recommended in production code) this
   // returns URLs up to the number from the ones that have smallest
   // change_seq numbers (i.e. older changes).
   void GetNextChangedURLs(std::deque<storage::FileSystemURL>* urls,
                           int max_urls);
 
   // Returns all changes recorded for the given |url|.
   // Note that this also returns demoted changes.
@@ skipping 111 matching lines @@
   // This can be accessed on any threads (with num_changes_lock_).
   int64 num_changes_;
   mutable base::Lock num_changes_lock_;
 
   DISALLOW_COPY_AND_ASSIGN(LocalFileChangeTracker);
 };
 
 }  // namespace sync_file_system
 
 #endif  // CHROME_BROWSER_SYNC_FILE_SYSTEM_LOCAL_LOCAL_FILE_CHANGE_TRACKER_H_