Fixed file/directory url resolution for external mount point provider.

webkit/chromeos/fileapi/cros_mount_point_provider.h

   // Copyright (c) 2011 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_CHROMEOS_FILEAPI_CROS_MOUNT_POINT_PROVIDER_H_
 #define WEBKIT_CHROMEOS_FILEAPI_CROS_MOUNT_POINT_PROVIDER_H_
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/file_path.h"
+#include "base/synchronization/lock.h"
 #include "webkit/fileapi/file_system_mount_point_provider.h"
 #include "webkit/quota/special_storage_policy.h"
 
 namespace chromeos {
 
 class FileAccessPermissions;
 
 // An interface to provide local filesystem paths.
 class CrosMountPointProvider
     : public fileapi::ExternalFileSystemMountPointProvider {
@@ skipping 17 matching lines @@
       const FilePath& virtual_path,
       bool create);
   virtual bool IsRestrictedFileName(const FilePath& filename) const OVERRIDE;
   virtual std::vector<FilePath> GetRootDirectories() const OVERRIDE;
 
   // fileapi::ExternalFileSystemMountPointProvider overrides.
   virtual void GrantFullAccessToExtension(
       const std::string& extension_id) OVERRIDE;
   virtual void GrantFileAccessToExtension(
       const std::string& extension_id, const FilePath& virtual_path) OVERRIDE;
-  void RevokeAccessForExtension(const std::string& extension_id) OVERRIDE;
+  virtual void RevokeAccessForExtension(
+      const std::string& extension_id) OVERRIDE;
+  virtual void AddMountPoint(FilePath mount_point) OVERRIDE;
+  virtual void RemoveMountPoint(FilePath mount_point) OVERRIDE;
 
  private:
   class GetFileSystemRootPathTask;
   typedef std::map<std::string, FilePath> MountPointMap;
 
+  // Gives the real file system's |root_path| for given |virtual_path|. Returns
+  // false when |virtual_path| cannot be mapped to the real file system.
+  bool GetRootForVirtualPath(const FilePath& virtual_path, FilePath* root_path);
+
+  base::Lock lock_;  // Synchronize all access to path_map_.
   MountPointMap mount_point_map_;
   scoped_refptr<quota::SpecialStoragePolicy> special_storage_policy_;
   scoped_ptr<FileAccessPermissions> file_access_permissions_;
   DISALLOW_COPY_AND_ASSIGN(CrosMountPointProvider);
 };
 
 }  // namespace chromeos
 
 #endif  // WEBKIT_CHROMEOS_FILEAPI_CROS_MOUNT_POINT_PROVIDER_H_