Bug 1214305 - Part 8: Enable secure upgrade service worker tests on e10s; r=jdm

dom/workers/test/serviceworkers/mochitest.ini

@@ -283,9 +283,7 @@ skip-if = toolkit == "android" || toolkit == "gonk"
 [test_file_blob_upload.html]
 [test_unresolved_fetch_interception.html]
 [test_hsts_upgrade_intercept.html]
-skip-if = e10s # Bug 1214305
 [test_csp_upgrade-insecure_intercept.html]
-skip-if = e10s # Bug 1214305
 [test_serviceworker_header.html]
 [test_openWindow.html]
 skip-if = toolkit == "android" || toolkit == "gonk"