Bug 1291844 - Disable test_restore_windows_after_restart.py on Windows due to perma failures. r=mconley

MozReview-Commit-ID: 2wyWyPvPjJ

--HG--
extra : rebase_source : 0061b0c15e7b88d40dc38acc654daef27315bade

testing/firefox-ui/tests/functional/sessionstore/manifest.ini

@@ -2,4 +2,4 @@
 tags = local
 
 [test_restore_windows_after_restart.py]
-skip-if = e10s # Bug 1228446
+skip-if = (os == "win" || e10s) # Bug 1291844 and Bug 1228446