Examine source code of Selected Text Searcher

{
  "manifest_version": 2,
  "name": "__MSG_name__",
  "description": "__MSG_desc__",
  "version": "1.45resigned1",
  "default_locale": "en",
  "web_accessible_resources": [
    "css/normalize.css",
    "css/no_transition.css",
    "css/no_pointer_events.css",
    "css/iframe_wrapper_content_style.css",
    "css/iframe_wrapper_content_style_and_options.css",
    "css/gesture_canvas.css",
    "css/content_script_light_theme.css",
    "css/light_theme.css",
    "css/gestures_light_theme.css",
    "css/non_transparent_background_dark.css",
    "css/non_transparent_background_light.css",
    "Roboto-Light.ttf"
  ],
  "applications": {
    "gecko": {
      "id": "selected-text-searcher@loftyshaky"
    }
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "19": "icons/icon19.png",
      "32": "icons/icon32.png",
      "64": "icons/icon64.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "64": "icons/icon64.png",
    "128": "icons/icon128.png"
  },
  "background": {
    "scripts": [
      "js/hf.js",
      "js/background.js"
    ]
  },
  "permissions": [
    "storage",
    "unlimitedStorage",
    "contextMenus",
    "<all_urls>"
  ],
  "options_ui": {
    "page": "options.html",
    "chrome_style": false,
    "open_in_tab": true
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "js/hf.js",
        "js/content_script_and_options.js",
        "js/content_script.js"
      ],
      "css": [
        "css/content_script.css",
        "css/gesture_canvas_iframe.css"
      ],
      "all_frames": true,
      "run_at": "document_start"
    }
  ]
}