fabe/manifest.json

## manifest.json
{
  "name": "plugin",
  "description": "plugin description.",
  "devtools_page": "plugin.html",
  "permissions": [
    "http://*/*",
    "https://*/*"
  ],
  "manifest_version": 1,
  "version": "1"
}

## plugin.html
<html>

<head>
    <script src="https://cdn.socket.io/socket.io-1.4.5.js"></script>
    <script src="plugin.js"></script>
</head>

<body></body>

</html>

## plugin.js
var socket = io.connect('http://localhost:8888'); // your url for the request

chrome.devtools.network.onRequestFinished.addListener(function(request) {
    var data = {};

    // get request data
    data.url = request.request.url;
    data.size = request.response.content.size;
    data.type = request.response.content.mimeType;
    data.time = request.time;
    data.start = request.startedDateTime;

    // send data to server
    socket.emit('data', data);
});
	{
	"name": "plugin",
	"description": "plugin description.",
	"devtools_page": "plugin.html",
	"permissions": [
	"http:///",
	"https:///"
	],
	"manifest_version": 1,
	"version": "1"
	}
	<html>

	<head>
	<script src="https://cdn.socket.io/socket.io-1.4.5.js"></script>
	<script src="plugin.js"></script>
	</head>

	<body></body>

	</html>
	var socket = io.connect('http://localhost:8888'); // your url for the request

	chrome.devtools.network.onRequestFinished.addListener(function(request) {
	var data = {};

	// get request data
	data.url = request.request.url;
	data.size = request.response.content.size;
	data.type = request.response.content.mimeType;
	data.time = request.time;
	data.start = request.startedDateTime;

	// send data to server
	socket.emit('data', data);
	});