Add missing Rank

modules/exploits/android/browser/webview_addjavascriptinterface.rb

@@ -7,6 +7,7 @@ require 'msf/core'
 require 'msf/core/exploit/android'
 
 class Metasploit3 < Msf::Exploit::Remote
+  Rank = ExcellentRanking
 
   include Msf::Exploit::Remote::BrowserExploitServer
   include Msf::Exploit::Remote::BrowserAutopwn