Bug 1440421 part 1. Ignore activity-stream and node_modules for linting. r=ahal

MozReview-Commit-ID: EEua2y790cW

--HG--
extra : rebase_source : ce98dcbd82eb1f59594d6fe40e34648b7bd639de

.eslintignore

@@ -89,10 +89,8 @@ browser/extensions/pdfjs/content/web**
 # generated or library files in pocket
 browser/extensions/pocket/content/panels/js/tmpl.js
 browser/extensions/pocket/content/panels/js/vendor/**
-# generated or library files in activity-stream
-browser/extensions/activity-stream/data/content/activity-stream.bundle.js
-browser/extensions/activity-stream/test/**
-browser/extensions/activity-stream/vendor/**
+# Activity Stream has incompatible eslintrc. `npm run lint` from its directory
+browser/extensions/activity-stream/**
 # The only file in browser/locales/ is pre-processed.
 browser/locales/**
 # imported from chromium

.flake8

@@ -5,6 +5,7 @@ max-line-length = 99
 exclude =
     browser/extensions/mortar/ppapi/,
     build/pymake/,
+    node_modules,
     security/nss/,
     testing/mochitest/pywebsocket,
     tools/lint/test/files,

tools/lint/cpp-virtual-final.yml

@@ -6,6 +6,7 @@ cpp-virtual-final:
     include: ['.']
     exclude:
         # Third-party code with cpp-virtual-final warnings:
+        - '**/node_modules'
         - gfx/angle
         - gfx/skia
         - media/webrtc/trunk