Pepper Message Filters: Port to use explicit permission grants in ChildProcessSecurityPolicy.

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 48 matching lines @@
   // permissions perform these functions on |file|.
 
   // Before servicing a child process's request to upload a file to the web, the
   // browser should call this method to determine whether the process has the
   // capability to upload the requested file.
   virtual bool CanReadFile(int child_id, const base::FilePath& file) = 0;
   virtual bool CanWriteFile(int child_id, const base::FilePath& file) = 0;
   virtual bool CanCreateFile(int child_id, const base::FilePath& file) = 0;
   virtual bool CanCreateWriteFile(int child_id, const base::FilePath& file) = 0;
 
+  // Special support for Pepper plugin open file requests. Translates the
+  // Pepper open flags to the specific grants supported by the policy.
+  bool HasPermissionsForPepperMode(int child_id, const base::FilePath& file,

[jam, 2013/07/22 23:46:41]

nit: since this is used only by content, put it on
ChildProcessSecurityPolicyImpl and not the interface

[tommycli, 2013/07/23 22:21:35]

Whoops this was just leftover. This has been put into PepperSecurityHelper
class.

+                                   int pp_open_flags);
+
   // Grants read access permission to the given isolated file system
   // identified by |filesystem_id|. An isolated file system can be
   // created for a set of native files/directories (like dropped files)
   // using fileapi::IsolatedContext. A child process needs to be granted
   // permission to the file system to access the files in it using
   // file system URL.
   //
   // Note: to grant read access to the content of files you also need
   // to give permission directly to the file paths using GrantReadFile.
   // TODO(kinuko): We should unify this file-level and file-system-level
@@ skipping 38 matching lines @@
 
   // Returns true iff read and write access has been granted to the filesystem
   // with |filesystem_id|.
   virtual bool CanReadWriteFileSystem(int child_id,
                                       const std::string& filesystem_id) = 0;
 };
 
 };  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_CHILD_PROCESS_SECURITY_POLICY_H_