title: Cannot run content script in chrome extension
body: <p>I have written a code for writing google chrome extension but the problem is that i cannot execute the content script in the chrome console.
  Here is my following code</p>
  
  <p>For Manifest file:-</p>
  
  <pre><code>    {
        "manifest_version": 2,
  
        "name": "My new extension",
        "description": "It does stuff",
        "version": "1"
        "content_scripts": [
      {
         "matches": ["&lt;all_urls&gt;"],
         "js": ["content.js"]
       }
     ]
   }
  </code></pre>
  
  <p>For my content script:-</p>
  
  <pre><code>     console.log("Hello world!");
  </code></pre>
  
  <p>When i deploy the extension, it is accepted properly. It should be printed at chrome console but when i refresh, nothing is printed.
  Can please anyone help me where I am wrong?
  Thanks in advance.</p>