manifest.json

{
  "name": "Drupal Helper",
  "version": "0.6",
  "description": "Provides convenience stuff for drupal.",
  "browser_action": {
    "default_icon": "icon.png"
  },
  "permissions": [
    "<all_urls>"
  ],
  "content_scripts" : [
      {
        "matches" : [
          "*://*/admin/modules",
          "*://*/admin/modules/list",
          "*://*/*/admin/modules",
          "*://*/*/admin/modules/list"
        ],
        "css" : ["modules.css"],
        "js" : ["modules.js"]
      },
      {
        "matches" : [
          "*://*/admin/people/permissions",
          "*://*/*/admin/people/permissions"
        ],
        "css" : ["permissions.css"],
        "js" : ["permissions.js"]
      },
      {
        "matches" : [
          "*://*/admin/structure/context/list/*/edit",
          "*://*/*/admin/structure/context/list/*/edit"
        ],
        "css" : ["context.css"],
        "js" : ["context.js"]
      }
  ],
  "icons" : {
    "128" : "icon-128.png"
  },
  "manifest_version" : 2
}