Bug 1399375: Disable test_ext_permissions on asan for frequent intermittents. r=me

MozReview-Commit-ID: EIt2GQENXUi

--HG--
extra : rebase_source : cbdf16aeddcbf2ea0329482189965d653ccc0881

toolkit/components/extensions/test/xpcshell/xpcshell-common.ini

@@ -75,7 +75,7 @@ skip-if = os == "android"
 [test_native_manifests.js]
 skip-if = os == "android"
 [test_ext_permissions.js]
-skip-if = os == "android" || (os == "mac" && debug) # Bug 1350559, 1399550
+skip-if = os == "android" || (os == "mac" && debug) || asan # Bug 1350559, 1399550, 1399375
 [test_proxy_scripts.js]
 skip-if = os == "linux" # bug 1393940
 [test_proxy_scripts_results.js]