HTML5 Audio Description (via text to speech)

manifest.json

{
  "update_url": "http://clients2.google.com/service/update2/crx",
  "name": "HTML5 Audio Description (via text to speech)",
  "version": "1",
  "description": "This extension plays audio description track elements of HTML5 videos via Chrome text to speech extension.",
  "permissions": [
    "<all_urls>",
    "tts"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_page": "options.html",
  "minimum_chrome_version": "19",
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "all_frames": true,
      "js": [
        "content_script.js"
      ]
    }
  ],
  "icons": {
    "48": "chrome-a11y-audio-ext-icon-v1-48.png",
    "128": "chrome-a11y-audio-ext-icon-v1.png"
  },
  "manifest_version": 2
}