chromium/chrome/test/data/extensions/api_test/messaging/connect/manifest.json

{
  "name": "connect_external",
  "version": "1.0",
  "manifest_version": 2,
  "description": "Tests connect from a content script.",
  "permissions": ["tabs", "webNavigation"],
  "background": {
    "persistent": false,
    "scripts": ["test.js"]
  },
  "content_scripts": [
    {
      "matches": ["http://*/*"],
      "js": ["page.js"]
    },
    {
      "all_frames": true,
      "matches": [
        "http://*/*?testSendMessageFromFrame*",
        "http://*/*?testSendMessageFromSandboxedFrame*",
        "http://*/*?testConnectChildFrameAndNavigate*"
      ],
      "js": ["frame.js"]
    }
  ]
}