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

chrome/browser/sync_file_system/local/local_file_sync_service.h

Index: chrome/browser/sync_file_system/local/local_file_sync_service.h
diff --git a/chrome/browser/sync_file_system/local/local_file_sync_service.h b/chrome/browser/sync_file_system/local/local_file_sync_service.h
index 86414d5eac633a017aa6efa98f547ac8ad8646d6..dbf24c5cd1a688bd66acb47db88f67cc65c754ee 100644
--- a/chrome/browser/sync_file_system/local/local_file_sync_service.h
+++ b/chrome/browser/sync_file_system/local/local_file_sync_service.h
@@ -74,7 +74,7 @@ class LocalFileSyncService
   static scoped_ptr<LocalFileSyncService> CreateForTesting(
       Profile* profile,
       leveldb::Env* env_override);
-  virtual ~LocalFileSyncService();
+  ~LocalFileSyncService() override;
 
   void Shutdown();
 
@@ -129,25 +129,22 @@ class LocalFileSyncService
                                     const SyncFileMetadataCallback& callback);
 
   // RemoteChangeProcessor overrides.
-  virtual void PrepareForProcessRemoteChange(
+  void PrepareForProcessRemoteChange(
       const storage::FileSystemURL& url,
       const PrepareChangeCallback& callback) override;
-  virtual void ApplyRemoteChange(const FileChange& change,
-                                 const base::FilePath& local_path,
-                                 const storage::FileSystemURL& url,
-                                 const SyncStatusCallback& callback) override;
-  virtual void FinalizeRemoteSync(
-      const storage::FileSystemURL& url,
-      bool clear_local_changes,
-      const base::Closure& completion_callback) override;
-  virtual void RecordFakeLocalChange(
-      const storage::FileSystemURL& url,
-      const FileChange& change,
-      const SyncStatusCallback& callback) override;
+  void ApplyRemoteChange(const FileChange& change,
+                         const base::FilePath& local_path,
+                         const storage::FileSystemURL& url,
+                         const SyncStatusCallback& callback) override;
+  void FinalizeRemoteSync(const storage::FileSystemURL& url,
+                          bool clear_local_changes,
+                          const base::Closure& completion_callback) override;
+  void RecordFakeLocalChange(const storage::FileSystemURL& url,
+                             const FileChange& change,
+                             const SyncStatusCallback& callback) override;
 
   // LocalOriginChangeObserver override.
-  virtual void OnChangesAvailableInOrigins(
-      const std::set<GURL>& origins) override;
+  void OnChangesAvailableInOrigins(const std::set<GURL>& origins) override;
 
   // Called when a particular origin (app) is disabled/enabled while
   // the service is running. This may be called for origins/apps that