Adding FileUtil::CreateSnapshotFile

webkit/fileapi/isolated_file_util.h

 // Copyright (c) 2012 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 WEBKIT_FILEAPI_ISOLATED_FILE_UTIL_H_
 #define WEBKIT_FILEAPI_ISOLATED_FILE_UTIL_H_
 
 #include "base/file_path.h"
 #include "base/file_util_proxy.h"
 #include "base/platform_file.h"
@@ skipping 71 matching lines @@
   virtual base::PlatformFileError CopyInForeignFile(
         FileSystemOperationContext* context,
         const FilePath& src_file_path,
         const FileSystemURL& dest_url) OVERRIDE;
   virtual base::PlatformFileError DeleteFile(
       FileSystemOperationContext* context,
       const FileSystemURL& url) OVERRIDE;
   virtual base::PlatformFileError DeleteSingleDirectory(
       FileSystemOperationContext* context,
       const FileSystemURL& url) OVERRIDE;
+  virtual scoped_refptr<webkit_blob::ShareableFileReference>
+      CreateSnapshotFile(FileSystemOperationContext* context,
+                         const FileSystemURL& url,
+                         base::PlatformFileError* result,
+                         base::PlatformFileInfo* file_info,
+                         FilePath* platform_path) OVERRIDE;
 
  private:
   // Returns false if the given |url| is not a valid path.
   bool GetPlatformPath(const FileSystemURL& url,
                        FilePath* platform_path) const;
   DISALLOW_COPY_AND_ASSIGN(IsolatedFileUtil);
 };
 
 }  // namespace fileapi
 
 #endif  // WEBKIT_FILEAPI_ISOLATED_FILE_UTIL_H_