Examine source code of Pinned Google Inbox

{
  "manifest_version": 2,
  "name": "Pinned Google Inbox",
  "version": "1.1resigned1",
  "description": "Go to the pinned Google Inbox tab. If it doesn't exist, create it.",
  "developer": {
    "name": "Luke Reichold",
    "url": "http://lukereichold.com"
  },
  "icons": {
    "48": "icons/inbox_48.png",
    "96": "icons/inbox_96.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/inbox_16.png",
      "32": "icons/inbox_32.png"
    }
  },
  "permissions": [
    "tabs",
    "https://inbox.google.com/*"
  ],
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Alt+Shift+I"
      }
    }
  },
  "options_ui": {
    "page": "options/options.html",
    "browser_style": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{603a6191-fd6c-49af-9152-8be16758ece7}"
    }
  }
}