ChildProcessSecurityPolicy: Add DeleteFromFileSystem permission.

content/public/browser/child_process_security_policy.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 CONTENT_PUBLIC_BROWSER_CHILD_PROCESS_SECURITY_POLICY_H_
 #define CONTENT_PUBLIC_BROWSER_CHILD_PROCESS_SECURITY_POLICY_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 89 matching lines @@
   virtual void GrantCreateFileForFileSystem(
       int child_id,
       const std::string& filesystem_id) = 0;
 
   // Grants permission to copy-into filesystem |filesystem_id|. 'copy-into'
   // is used to allow copying files into the destination filesystem without
   // granting more general create and write permissions.
   virtual void GrantCopyIntoFileSystem(int child_id,
                                        const std::string& filesystem_id) = 0;
 
+  // Grants permission to delete from filesystem |filesystem_id|. 'delete-from'
+  // is used to allow deleting files into the destination filesystem without
+  // granting more general create and write permissions.
+  virtual void GrantDeleteFromFileSystem(int child_id,
+                                         const std::string& filesystem_id) = 0;
+
   // Grants the child process the capability to access URLs of the provided
   // scheme.
   virtual void GrantScheme(int child_id, const std::string& scheme) = 0;
 
   // Returns true if read access has been granted to |filesystem_id|.
   virtual bool CanReadFileSystem(int child_id,
                                  const std::string& filesystem_id) = 0;
 
   // Returns true if read and write access has been granted to |filesystem_id|.
   virtual bool CanReadWriteFileSystem(int child_id,
                                       const std::string& filesystem_id) = 0;
 
   // Returns true if copy-into access has been granted to |filesystem_id|.
   virtual bool CanCopyIntoFileSystem(int child_id,
                                      const std::string& filesystem_id) = 0;
+
+  // Returns true if delete-from access has been granted to |filesystem_id|.
+  virtual bool CanDeleteFromFileSystem(int child_id,
+                                       const std::string& filesystem_id) = 0;
 };
 
 };  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_CHILD_PROCESS_SECURITY_POLICY_H_