This fixes an edge case where a "File://" style URI could be passed in
but not pass this check, even though the underlying framework recognizes
this as a legitimate file.
Bug: 197328178
Test: See repro steps on http://b/197328178, was no longer able to
repro.
Change-Id: Id837744a79d1aca91b41d24207dc9b98f2b5b5e9
(cherry picked from commit 9607c95e71)