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

chrome/browser/sync_file_system/drive_backend/metadata_database_index.h

Index: chrome/browser/sync_file_system/drive_backend/metadata_database_index.h
diff --git a/chrome/browser/sync_file_system/drive_backend/metadata_database_index.h b/chrome/browser/sync_file_system/drive_backend/metadata_database_index.h
index 7c983ec528e0905c6ed2d88d08eea51a98cad407..9c80060d8fe7cda7a9b1a589566e6fbd4d8520ac 100644
--- a/chrome/browser/sync_file_system/drive_backend/metadata_database_index.h
+++ b/chrome/browser/sync_file_system/drive_backend/metadata_database_index.h
@@ -58,49 +58,48 @@ struct DatabaseContents {
 // Maintains indexes of MetadataDatabase on memory.
 class MetadataDatabaseIndex : public MetadataDatabaseIndexInterface {
  public:
-  virtual ~MetadataDatabaseIndex();
+  ~MetadataDatabaseIndex() override;
 
   static scoped_ptr<MetadataDatabaseIndex> Create(LevelDBWrapper* db);
   static scoped_ptr<MetadataDatabaseIndex> CreateForTesting(
       DatabaseContents* contents, LevelDBWrapper* db);
 
   // MetadataDatabaseIndexInterface overrides.
-  virtual bool GetFileMetadata(
-      const std::string& file_id, FileMetadata* metadata) const override;
-  virtual bool GetFileTracker(
-      int64 tracker_id, FileTracker* tracker) const override;
-  virtual void StoreFileMetadata(scoped_ptr<FileMetadata> metadata) override;
-  virtual void StoreFileTracker(scoped_ptr<FileTracker> tracker) override;
-  virtual void RemoveFileMetadata(const std::string& file_id) override;
-  virtual void RemoveFileTracker(int64 tracker_id) override;
-  virtual TrackerIDSet GetFileTrackerIDsByFileID(
+  bool GetFileMetadata(const std::string& file_id,
+                       FileMetadata* metadata) const override;
+  bool GetFileTracker(int64 tracker_id, FileTracker* tracker) const override;
+  void StoreFileMetadata(scoped_ptr<FileMetadata> metadata) override;
+  void StoreFileTracker(scoped_ptr<FileTracker> tracker) override;
+  void RemoveFileMetadata(const std::string& file_id) override;
+  void RemoveFileTracker(int64 tracker_id) override;
+  TrackerIDSet GetFileTrackerIDsByFileID(
       const std::string& file_id) const override;
-  virtual int64 GetAppRootTracker(const std::string& app_id) const override;
-  virtual TrackerIDSet GetFileTrackerIDsByParentAndTitle(
+  int64 GetAppRootTracker(const std::string& app_id) const override;
+  TrackerIDSet GetFileTrackerIDsByParentAndTitle(
       int64 parent_tracker_id,
       const std::string& title) const override;
-  virtual std::vector<int64> GetFileTrackerIDsByParent(
+  std::vector<int64> GetFileTrackerIDsByParent(
       int64 parent_tracker_id) const override;
-  virtual std::string PickMultiTrackerFileID() const override;
-  virtual ParentIDAndTitle PickMultiBackingFilePath() const override;
-  virtual int64 PickDirtyTracker() const override;
-  virtual void DemoteDirtyTracker(int64 tracker_id) override;
-  virtual bool HasDemotedDirtyTracker() const override;
-  virtual bool IsDemotedDirtyTracker(int64 tracker_id) const override;
-  virtual void PromoteDemotedDirtyTracker(int64 tracker_id) override;
-  virtual bool PromoteDemotedDirtyTrackers() override;
-  virtual size_t CountDirtyTracker() const override;
-  virtual size_t CountFileMetadata() const override;
-  virtual size_t CountFileTracker() const override;
-  virtual void SetSyncRootTrackerID(int64 sync_root_id) const override;
-  virtual void SetLargestChangeID(int64 largest_change_id) const override;
-  virtual void SetNextTrackerID(int64 next_tracker_id) const override;
-  virtual int64 GetSyncRootTrackerID() const override;
-  virtual int64 GetLargestChangeID() const override;
-  virtual int64 GetNextTrackerID() const override;
-  virtual std::vector<std::string> GetRegisteredAppIDs() const override;
-  virtual std::vector<int64> GetAllTrackerIDs() const override;
-  virtual std::vector<std::string> GetAllMetadataIDs() const override;
+  std::string PickMultiTrackerFileID() const override;
+  ParentIDAndTitle PickMultiBackingFilePath() const override;
+  int64 PickDirtyTracker() const override;
+  void DemoteDirtyTracker(int64 tracker_id) override;
+  bool HasDemotedDirtyTracker() const override;
+  bool IsDemotedDirtyTracker(int64 tracker_id) const override;
+  void PromoteDemotedDirtyTracker(int64 tracker_id) override;
+  bool PromoteDemotedDirtyTrackers() override;
+  size_t CountDirtyTracker() const override;
+  size_t CountFileMetadata() const override;
+  size_t CountFileTracker() const override;
+  void SetSyncRootTrackerID(int64 sync_root_id) const override;
+  void SetLargestChangeID(int64 largest_change_id) const override;
+  void SetNextTrackerID(int64 next_tracker_id) const override;
+  int64 GetSyncRootTrackerID() const override;
+  int64 GetLargestChangeID() const override;
+  int64 GetNextTrackerID() const override;
+  std::vector<std::string> GetRegisteredAppIDs() const override;
+  std::vector<int64> GetAllTrackerIDs() const override;
+  std::vector<std::string> GetAllMetadataIDs() const override;
 
  private:
   typedef base::ScopedPtrHashMap<std::string, FileMetadata> MetadataByID;