Do not return FileSystem contents if the profile is in incognito mode.

webkit/browser/fileapi/sandbox_file_system_backend.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_BROWSER_FILEAPI_SANDBOX_FILE_SYSTEM_BACKEND_H_
 #define WEBKIT_BROWSER_FILEAPI_SANDBOX_FILE_SYSTEM_BACKEND_H_
 
 #include <set>
 #include <string>
 
@@ skipping 48 matching lines @@
       FileSystemContext* context) const OVERRIDE;
   virtual FileSystemQuotaUtil* GetQuotaUtil() OVERRIDE;
 
   // Returns an origin enumerator of this backend.
   // This method can only be called on the file thread.
   SandboxFileSystemBackendDelegate::OriginEnumerator* CreateOriginEnumerator();
 
   void set_enable_temporary_file_system_in_incognito(bool enable) {
     enable_temporary_file_system_in_incognito_ = enable;
   }
+  bool enable_temporary_file_system_in_incognito() const {
+    return enable_temporary_file_system_in_incognito_;
+  }
+
 
  private:
   SandboxFileSystemBackendDelegate* delegate_;  // Not owned.
 
   bool enable_temporary_file_system_in_incognito_;
 
   DISALLOW_COPY_AND_ASSIGN(SandboxFileSystemBackend);
 };
 
 }  // namespace fileapi
 
 #endif  // WEBKIT_BROWSER_FILEAPI_SANDBOX_FILE_SYSTEM_BACKEND_H_