title: Enable chrome extention for hosts only
body: <p>Hi I'm creating my first chrome extension here is my minifest file</p>
  
  <pre><code>{
    "name": "Get pages source",
    "version": "1.0",
    "manifest_version": 2,
    "description": "Get pages source from a popup",
    "browser_action": {
      "default_icon": {
        "16": "images/get_started16.png",
        "32": "images/get_started32.png",
        "48": "images/get_started48.png",
        "128": "images/get_started128.png"
      },
      "default_popup": "popup.html"
    },
    "icons": {
      "16": "images/get_started16.png",
      "32": "images/get_started32.png",
      "48": "images/get_started48.png",
      "128": "images/get_started128.png"
    },
    "permissions": ["tabs", "&lt;all_urls&gt;"]
  }
  </code></pre>
  
  <p>I want to disable the extension for all urls other than few lets say I just want to enable my extension only for yahoo.com and stackoverflow.com what I need to do.</p>