Bug 1616011 - disable browser_devices_get_user_media.js on Linux_64 for frequent failures. r=intermittent-reviewers,MasterWayZ DONTBUILD

Differential Revision: https://phabricator.services.mozilla.com/D133709

browser/base/content/test/webrtc/browser.ini

@@ -22,7 +22,7 @@ skip-if =
 [browser_devices_get_user_media.js]
 https_first_disabled = true
 skip-if =
-  os == "linux" # linux: bug 976544, Bug 1616011
+  os == "linux" && bits == 64 # linux: bug 976544, Bug 1616011
 [browser_devices_get_user_media_anim.js]
 https_first_disabled = true
 [browser_devices_get_user_media_by_device_id.js]