Standardize usage of virtual/override/final in storage/

storage/browser/fileapi/isolated_file_system_backend.h

Index: storage/browser/fileapi/isolated_file_system_backend.h
diff --git a/storage/browser/fileapi/isolated_file_system_backend.h b/storage/browser/fileapi/isolated_file_system_backend.h
index 44e8a241964745965028d9ccbaf34d55d12c10b1..2c1237970d1aa742184a6c908124f78655357dd6 100644
--- a/storage/browser/fileapi/isolated_file_system_backend.h
+++ b/storage/browser/fileapi/isolated_file_system_backend.h
@@ -16,42 +16,42 @@ class AsyncFileUtilAdapter;
 class IsolatedFileSystemBackend : public FileSystemBackend {
  public:
   IsolatedFileSystemBackend();
-  virtual ~IsolatedFileSystemBackend();
+  ~IsolatedFileSystemBackend() override;
 
   // FileSystemBackend implementation.
-  virtual bool CanHandleType(FileSystemType type) const override;
-  virtual void Initialize(FileSystemContext* context) override;
-  virtual void ResolveURL(const FileSystemURL& url,
-                          OpenFileSystemMode mode,
-                          const OpenFileSystemCallback& callback) override;
-  virtual AsyncFileUtil* GetAsyncFileUtil(FileSystemType type) override;
-  virtual WatcherManager* GetWatcherManager(FileSystemType type) override;
-  virtual CopyOrMoveFileValidatorFactory* GetCopyOrMoveFileValidatorFactory(
+  bool CanHandleType(FileSystemType type) const override;
+  void Initialize(FileSystemContext* context) override;
+  void ResolveURL(const FileSystemURL& url,
+                  OpenFileSystemMode mode,
+                  const OpenFileSystemCallback& callback) override;
+  AsyncFileUtil* GetAsyncFileUtil(FileSystemType type) override;
+  WatcherManager* GetWatcherManager(FileSystemType type) override;
+  CopyOrMoveFileValidatorFactory* GetCopyOrMoveFileValidatorFactory(
       FileSystemType type,
       base::File::Error* error_code) override;
-  virtual FileSystemOperation* CreateFileSystemOperation(
+  FileSystemOperation* CreateFileSystemOperation(
       const FileSystemURL& url,
       FileSystemContext* context,
       base::File::Error* error_code) const override;
-  virtual bool SupportsStreaming(const FileSystemURL& url) const override;
-  virtual bool HasInplaceCopyImplementation(
+  bool SupportsStreaming(const FileSystemURL& url) const override;
+  bool HasInplaceCopyImplementation(
       storage::FileSystemType type) const override;
-  virtual scoped_ptr<storage::FileStreamReader> CreateFileStreamReader(
+  scoped_ptr<storage::FileStreamReader> CreateFileStreamReader(
       const FileSystemURL& url,
       int64 offset,
       int64 max_bytes_to_read,
       const base::Time& expected_modification_time,
       FileSystemContext* context) const override;
-  virtual scoped_ptr<FileStreamWriter> CreateFileStreamWriter(
+  scoped_ptr<FileStreamWriter> CreateFileStreamWriter(
       const FileSystemURL& url,
       int64 offset,
       FileSystemContext* context) const override;
-  virtual FileSystemQuotaUtil* GetQuotaUtil() override;
-  virtual const UpdateObserverList* GetUpdateObservers(
+  FileSystemQuotaUtil* GetQuotaUtil() override;
+  const UpdateObserverList* GetUpdateObservers(
       FileSystemType type) const override;
-  virtual const ChangeObserverList* GetChangeObservers(
+  const ChangeObserverList* GetChangeObservers(
       FileSystemType type) const override;
-  virtual const AccessObserverList* GetAccessObservers(
+  const AccessObserverList* GetAccessObservers(
       FileSystemType type) const override;
 
  private: