Update modules classes to use OVERRIDE / FINAL when needed

Source/modules/filesystem/DOMFileSystemSync.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 59 matching lines @@
     errorCallback->handleEvent(fileError.get());
 }
 
 PassRefPtr<DirectoryEntrySync> DOMFileSystemSync::root()
 {
     return DirectoryEntrySync::create(this, DOMFilePath::root);
 }
 
 namespace {
 
-class CreateFileHelper : public AsyncFileSystemCallbacks {
+class CreateFileHelper FINAL : public AsyncFileSystemCallbacks {
 public:
     class CreateFileResult : public RefCounted<CreateFileResult> {
       public:
         static PassRefPtr<CreateFileResult> create()
         {
             return adoptRef(new CreateFileResult());
         }
 
         bool m_failed;
         int m_code;
@@ skipping 10 matching lines @@
         {
         }
         friend class WTF::RefCounted<CreateFileResult>;
     };
 
     static PassOwnPtr<AsyncFileSystemCallbacks> create(PassRefPtr<CreateFileResult> result, const String& name, const KURL& url, FileSystemType type)
     {
         return adoptPtr(static_cast<AsyncFileSystemCallbacks*>(new CreateFileHelper(result, name, url, type)));
     }
 
-    virtual void didFail(int code)
+    virtual void didFail(int code) OVERRIDE
     {
         m_result->m_failed = true;
         m_result->m_code = code;
     }
 
     virtual ~CreateFileHelper()
     {
     }
 
-    virtual void didCreateSnapshotFile(const FileMetadata& metadata, PassRefPtr<BlobDataHandle> snapshot)
+    virtual void didCreateSnapshotFile(const FileMetadata& metadata, PassRefPtr<BlobDataHandle> snapshot) OVERRIDE
     {
         // We can't directly use the snapshot blob data handle because the content type on it hasn't been set.
         // The |snapshot| param is here to provide a a chain of custody thru thread bridging that is held onto until
         // *after* we've coined a File with a new handle that has the correct type set on it. This allows the
         // blob storage system to track when a temp file can and can't be safely deleted.
 
         // For regular filesystem types (temporary or persistent), we should not cache file metadata as it could change File semantics.
         // For other filesystem types (which could be platform-specific ones), there's a chance that the files are on remote filesystem.
         // If the port has returned metadata just pass it to File constructor (so we may cache the metadata).
         // FIXME: We should use the snapshot metadata for all files.
@@ skipping 38 matching lines @@
     fileSystem()->createSnapshotFileAndReadMetadata(fileSystemURL, CreateFileHelper::create(result, fileEntry->name(), fileSystemURL, type()));
     if (result->m_failed) {
         exceptionState.throwUninformativeAndGenericDOMException(result->m_code);
         return 0;
     }
     return result->m_file;
 }
 
 namespace {
 
-class ReceiveFileWriterCallback : public FileWriterBaseCallback {
+class ReceiveFileWriterCallback FINAL : public FileWriterBaseCallback {
 public:
     static PassOwnPtr<ReceiveFileWriterCallback> create()
     {
         return adoptPtr(new ReceiveFileWriterCallback());
     }
 
-    void handleEvent(FileWriterBase*)
+    virtual void handleEvent(FileWriterBase*) OVERRIDE
     {
     }
 
 private:
     ReceiveFileWriterCallback()
     {
     }
 };
 
-class LocalErrorCallback : public ErrorCallback {
+class LocalErrorCallback FINAL : public ErrorCallback {
 public:
     static PassOwnPtr<LocalErrorCallback> create(FileError::ErrorCode& errorCode)
     {
         return adoptPtr(new LocalErrorCallback(errorCode));
     }
 
-    void handleEvent(FileError* error)
+    virtual void handleEvent(FileError* error) OVERRIDE
     {
         ASSERT(error->code() != FileError::OK);
         m_errorCode = error->code();
     }
 
 private:
     explicit LocalErrorCallback(FileError::ErrorCode& errorCode)
         : m_errorCode(errorCode)
     {
     }
@@ skipping 17 matching lines @@
 
     fileSystem()->createFileWriter(createFileSystemURL(fileEntry), fileWriter.get(), callbacks.release());
     if (errorCode != FileError::OK) {
         FileError::throwDOMException(exceptionState, errorCode);
         return 0;
     }
     return fileWriter.release();
 }
 
 }