This removes variants of "blacklist" from the xpcom directory. The preference name "network.file.path_blacklist" is left in place and will need a more thorough plan for removal. Instances of `MOZ_ASAN_BLACKLIST` remain as well and should be replaced in a larger modifcation of the `#define` in the mfbt component.
Differential Revision: https://phabricator.services.mozilla.com/D80098
Bug 1536796 introduces "\\?\" prefix (DOS device specifier) to Windows file
paths. At the moment, the prefix is only prepended to the file paths that start
with a disk designator and a backslash.
On the other hands, IsBlockedUNCPath blocks file paths that start with "\\" in
Windows and that includes DOS device paths (the cases mentioned above).
Thus, this patch prevents DOS device paths from being treating as UNC paths in
IsBlockedUNCPath.
Differential Revision: https://phabricator.services.mozilla.com/D73621
Simon Giesecke
Eric Rahm
Tom Tung
Honza Bambas
Sylvestre Ledru
Valentin Gosu