Through a combination of SpecialPowers APIs and elbow grease we shall prevail.

Every test in dom/test/mochitest/ajax/offline fails because offlineTests.js is a huge mess of privileged code that doesn't have a SpecialPowers equivalent yet. This needs solving one way or another.

dom/tests/mochitest/bugs has a lot of tests that use showModalDialog and therefore fail.

dom/tests/mochitest/bugs/test_bug427744.html should probably not run if plugin.disable is true, as it is for non-maemo platforms on mobile.

dom/tests/mochitest/bugs/test_bug61098.html registers a mock prompt service and factory, which makes me want to cry.

dom/tests/mochitest/whatwg/test_bug500328.html uses SpecialPowers.isBackButtonEnabled which calls SpecialPowers private APIs that don't work in e10s (and have comments indicating that much).

The above comments and blocking bugs indicate test failures that these patches do not address. Furthermore, these patches are still based on the existing SpecialPowers.setXPref infrastructure, so they'll need to be rewritten to use the new SpecialPowers.pushPrefEnv API when that lands.