title: Chrome Extension - How to get HTTP Response Body?
body: <p>It seems to be difficult problem (or impossible??).
  I want to get and read HTTP Response, caused by HTTP Request in browser, under watching Chrome Extension background script.
  We can get HTTP Request Body in this way</p>
  
  <pre><code>chrome.webRequest.onBeforeRequest.addListener(function(data){
      // data contains request_body
  },{'urls':[]},['requestBody']);
  </code></pre>
  
  <p>I also checked these stackoverflows</p>
  
  <ul>
  <li><a href="https://stackoverflow.com/questions/10393638/chrome-extensions-other-ways-to-read-response-bodies-than-chrome-devtools-netw">Chrome extensions - Other ways to read response bodies than chrome.devtools.network?</a></li>
  <li><a href="https://stackoverflow.com/questions/8939467/chrome-extension-to-read-http-response">Chrome extension to read HTTP response</a></li>
  </ul>
  
  <p>Is there any clever way to get HTTP Response Body in Chrome Extension?</p>