Bug 1512052 - Update some directories in .eslintignore, and correct a few .eslintrc.js files. r=mossop

Differential Revision: https://phabricator.services.mozilla.com/D13745

--HG--
rename : browser/components/attribution/test/.eslintrc.js => browser/components/attribution/test/xpcshell/.eslintrc.js
extra : moz-landing-system : lando

.eslintignore

@@ -36,6 +36,7 @@ uriloader/exthandler/**
 uriloader/exthandler/tests/mochitest/**
 widget/headless/tests/**
 widget/tests/**
+xpfe/**
 
 # We currently have no js files in these directories, so we ignore them by
 # default to aid ESLint's performance.
@@ -50,7 +51,6 @@ mozglue/**
 nsprpub/**
 other-licenses/**
 startupcache/**
-xpfe/**
 
 # These directories only contain crashtests, but we still skip the whole
 # directory to aid performance.
@@ -239,6 +239,7 @@ dom/xul/**
 # Third-party
 dom/canvas/test/webgl-conf/**
 dom/imptests/**
+dom/media/webaudio/test/blink/**
 dom/media/webvtt/**
 
 # Third-party
@@ -255,6 +256,9 @@ intl/locale/**
 intl/strres/**
 intl/uconv/**
 
+# Third-party
+layout/mathml/imptests/**
+
 # Exclude everything but self-hosted JS
 js/ductwork/**
 js/examples/**

browser/modules/test/browser/formValidation/.eslinrc.js

@@ -1,7 +0,0 @@
-"use strict";
-
-module.exports = {
-  "extends": [
-    "plugin:mozilla/browser-test"
-  ]
-};