1<div id="pageData-name" class="pageData">WebRequest API</div> 2 3<!-- BEGIN AUTHORED CONTENT --> 4<p id="classSummary"> 5Use the <code>chrome.experimental.webRequest</code> module to intercept, block, 6or modify requests in-flight. This module is still very much experimental. For 7information on how to use experimental APIs, see the 8<a href="experimental.html">chrome.experimental.* APIs</a> page. 9</p> 10 11<h2>A note about timestamps</h2> 12<p> 13It's important to note that some technical oddities in the OS's handling 14of distinct Chrome processes can cause the clock to be skewed between the 15browser itself and extension processes. That means that WebRequest's events' 16<code>timeStamp</code> property is only guaranteed to be <i>internally</i> 17consistent. Comparing one event to another event will give you the correct 18offset between them, but comparing them to the current time inside the 19extension (via <code>(new Date()).getTime()</code>, for instance) might give 20unexpected results. 21</p> 22<!-- END AUTHORED CONTENT --> 23