Fix openIn crashing when getting an external file to open.

The problem is URLLoader doesn't know chrome://external-file
So providing it with the actual file:// URL fixes the problem.

Bug: 928252
Change-Id: I1cda9cc076bd804a660aa46fdea84569bf7a5829
Reviewed-on: https://chromium-review.googlesource.com/c/1474686
Reviewed-by: Eugene But <eugenebut@chromium.org>
Commit-Queue: Mohammad Refaat <mrefaat@chromium.org>
Cr-Commit-Position: refs/heads/master@{#632691}
1 file changed