Grant Files.app access for mount points added after its launch.

chrome/browser/chromeos/fileapi/file_access_permissions.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_CHROMEOS_FILEAPI_FILE_ACCESS_PERMISSIONS_H_
 #define CHROME_BROWSER_CHROMEOS_FILEAPI_FILE_ACCESS_PERMISSIONS_H_
 
 #include <map>
 #include <set>
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/files/file_path.h"
 #include "base/synchronization/lock.h"
-#include "webkit/browser/webkit_storage_browser_export.h"
 
 namespace chromeos {
 
+// In a thread safe manner maintains the set of paths allowed to access for
+// each extension.
 class FileAccessPermissions {
  public:
   FileAccessPermissions();
   virtual ~FileAccessPermissions();
 
+  // Grants |extension_id| full access to all paths.
+  void GrantFullAccessPermission(const std::string& extension_id);
   // Grants |extension_id| access to |path|.
   void GrantAccessPermission(const std::string& extension_id,
                              const base::FilePath& path);
   // Checks id |extension_id| has permission to access to |path|.
   bool HasAccessPermission(const std::string& extension_id,
                            const base::FilePath& path) const;
   // Revokes all file permissions for |extension_id|.
   void RevokePermissions(const std::string& extension_id);
 
  private:
   typedef std::set<base::FilePath> PathSet;
   typedef std::map<std::string, PathSet> PathAccessMap;
 
   mutable base::Lock lock_;  // Synchronize all access to path_map_.
   PathAccessMap path_map_;
 
   DISALLOW_COPY_AND_ASSIGN(FileAccessPermissions);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_FILEAPI_FILE_ACCESS_PERMISSIONS_H_