Add test for Uri.toSafeString

Due to exposing api of toSafeString, add coresponding testing
for it.

Bug: 119153962
Test: atest UriTest
Change-Id: I156b2b03ee9c1d4a05ac635b4f684c5b4dcfca08
1 file changed
tree: bbf0c22328046dca3efbcf39177b76ca1b2168b5
  1. tests/