linux: Don't use clipboard module in renderer process

atom/common/api/lib/clipboard.coffee

@@ -1,4 +1,9 @@
+if process.platform is 'linux' and process.type is 'renderer'
+  # On Linux we could not access clipboard in renderer process.
+  module.exports = require('remote').require 'clipboard'
+else
   binding = process.atomBinding 'clipboard'
+
   module.exports =
     availableFormats: (type='standard') -> binding._availableFormats type
     has: (format, type='standard') -> binding._has format, type