[MediaGalleries] Introduce an AV-checking base class for copy-move validation

chrome/browser/media_galleries/fileapi/av_scanning_file_validator.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_MEDIA_GALLERIES_FILEAPI_AV_SCANNING_FILE_VALIDATOR_H_
+#define CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_AV_SCANNING_FILE_VALIDATOR_H_
+
+#include "base/basictypes.h"
+#include "webkit/browser/fileapi/copy_or_move_file_validator.h"
+
+namespace base {
+class FilePath;
+}  // namespace base
+
+namespace chrome {
+
+// This class supports AV scanning on post write validation.
+class AVScanningFileValidator : public fileapi::CopyOrMoveFileValidator {
+ public:
+  virtual ~AVScanningFileValidator();
+
+  // Runs AV checks on the resulting file (Windows-only).
+  // Subclasses will not typically override this method.
+  virtual void StartPostWriteValidation(
+      const base::FilePath& dest_platform_path,
+      const ResultCallback& result_callback) OVERRIDE;
+
+ protected:
+  AVScanningFileValidator();
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(AVScanningFileValidator);
+};
+
+}  // namespace chrome
+
+#endif  // CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_AV_SCANNING_FILE_VALIDATOR_H_