Implement some cross-browser practices (#473)

* Add mozilla plugin key to manifest

* Move all chrome references into platform-checking module

Addresses #453

* Add chrome global back to linter blacklist

* Add tests

1 files changed, 0 insertions, 1 deletions

diff --git a/.eslintrc b/.eslintrc
index e64b3e5be..d7cb8022e 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -23,7 +23,6 @@
   ],
 
   "globals": {
-    "chrome": true,
     "document": false,
     "navigator": false,
     "web3": true,