Examine source code of Salesforce Navigator for Lightning

{
  "name": "Salesforce Navigator for Lightning",
  "version": "4.8.20",
  "manifest_version": 2,
  "description": "Get more done in Salesforce - list and search records, make new ones, create a task or login as on the fly!",
  "page_action": {
    "default_icon": "images/sf-navigator32.png",
    "default_popup": "popup.html",
    "default_title": "Salesforce Navigator for Lightning"
  },
  "icons": {
    "16": "images/sf-navigator16.png",
    "32": "images/sf-navigator32.png",
    "48": "images/sf-navigator48.png",
    "128": "images/sf-navigator128.png"
  },
  "web_accessible_resources": [
    "images/ajax-loader.gif",
    "images/sf-navigator128.png"
  ],
  "background": {
    "scripts": [
      "shared.js",
      "scripts/pluralize.js",
      "background.js"
    ],
    "persistent": true
  },
  "content_scripts": [
    {
      "css": [
        "styles/main.css"
      ],
      "matches": [
        "https://*.force.com/*",
        "https://*.salesforce.com/*",
        "https://*.cloudforce.com/*"
      ],
      "all_frames": true,
      "js": [
        "contentScript.js",
        "shared.js",
        "scripts/pluralize.js",
        "popup.js"
      ],
      "run_at": "document_end"
    }
  ],
  "commands": {
    "goToTasks": {
      "description": "Go directly to Tasks",
      "suggested_key": {
        "default": "Ctrl+Shift+1"
      }
    },
    "goToReports": {
      "description": "Go directly to Reports",
      "suggested_key": {
        "default": "Ctrl+Shift+2"
      }
    },
    "showSearchBox": {
      "description": "Open Search Box",
      "suggested_key": {
        "default": "Ctrl+Shift+Space"
      }
    },
    "showAppMenu": {
      "description": "Open Lightning App Menu",
      "suggested_key": {
        "default": "Ctrl+Shift+A"
      }
    }
  },
  "permissions": [
    "activeTab",
    "management",
    "https://*.force.com/*",
    "https://*.salesforce.com/*",
    "https://*.cloudforce.com/*",
    "storage",
    "clipboardRead",
    "cookies"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{8597d04c-8508-4782-b04e-3f675b36d740}"
    }
  }
}