CONSOLE MESSAGE: line 64: Not allowed to load local resource: nonexistent.html
CONSOLE MESSAGE: line 64: Not allowed to request resource
CONSOLE MESSAGE: line 64: XMLHttpRequest cannot load nonexistent.html due to access control checks.

Bug 22475: REGRESSION: Async XMLHttpRequest never finishes on nonexistent files anymore

In both cases, readyState 4 should be reached. Because one of the requests is synchronous and for a file: URL, only a single error handler should be invoked.

Doing an XHR to a nonexistent file.
ReadyState handler: readyState = 1
ReadyState handler: readyState = 4
Error handler: readyState = 4

Doing an XHR to a directory.
ReadyState handler: readyState = 1
ReadyState handler: readyState = 4