Bug 1784772 - Disable browser_test_swipe_gesture.js on linux until a fix in place. r=hiro DONTBUILD

Differential Revision: https://phabricator.services.mozilla.com/D173370

widget/tests/browser/browser.ini

@@ -11,6 +11,7 @@ run-if = (os == 'mac' || os == 'win' || os == 'linux')
 skip-if =
   os == "win" && bits == 32 && !debug # Bug 1759422
   verify # Bug 1800022
+  os == "linux" # Bug 1784772
 support-files =
   helper_swipe_gesture.html
   !/gfx/layers/apz/test/mochitest/apz_test_native_event_utils.js