manifest.json

{
  "manifest_version": 2,
  "name": "Open SearchResult Shortcuts",
  "version": "1.0",
  "permissions": [
    "tabs"
  ],
  "browser_action": {
    "default_title": "Open SearchResult Shortcuts",
    "default_icon": "icons/icon32.png",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.google.com/search*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "commands": {
    "0": {
      "suggested_key": {
        "default": "Alt+1",
        "mac": "Alt+1"
      },
      "description": "."
    },
    "1": {
      "suggested_key": {
        "default": "Alt+2",
        "mac": "Alt+2"
      },
      "description": "."
    },
    "2": {
      "suggested_key": {
        "default": "Alt+3",
        "mac": "Alt+3"
      },
      "description": "."
    },
    "3": {
      "suggested_key": {
        "default": "Alt+4",
        "mac": "Alt+4"
      },
      "description": "."
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "24": "icons/icon24.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  }
}