title: Chrome extension Content Script not working
body: <p>I built a Chrome Extension script that is supposed to run on Reddit.</p>
  
  <p>My script:</p>
  
  <pre><code>console.log("hello world");
  </code></pre>
  
  <p>My manifest.json</p>
  
  <pre><code> {
      "manifest_version": 2,
      "name": "Name",
      "description": "Desc",
      "version": "1.0",
      "browser_action": {
          "default_icon": "icon.png"
      },
      "content_scripts": [
          {
              "matches": [
                  "*://reddit.com/*"
              ],
              "js": [
                  "contentscript.js"
              ],
              "run_at": "document_end"
          }
      ],
      "permissions": [
      "tabs", "*://reddit.com/*", "activeTab"
    ]
  }
  </code></pre>
  
  <p>The script doesn't show up in the "Content Script" section in the chrome dev tools. Does anyone have an idea why my extension is not running? </p>