plugins/npapi/manifest-template.json

{
  "name": "GWT Developer Plugin",
  "version": "GWT_DEV_PLUGIN_VERSION",
  "description": "A plugin to enable debugging with GWT's Development Mode",
  "update_url": "https://dl-ssl.google.com/gwt/plugins/chrome/updates.xml",
  "icons": {
    "16": "gwt16.png",
    "32": "gwt32.png",
    "48": "gwt48.png",
    "64": "gwt64.png",
    "128": "gwt128.png"
  },
  "background_page": "background.html",
  "content_scripts": [
    {
      "matches": ["http://*/*", "https://*/*", "file:///*"],
      "js": ["record_tab_id.js"]
    }
  ],
  "plugins": [
    { "path": "WINNT_x86-msvc/npGwtDevPlugin.dll", "public": true }
  ]
}