This test is intended to verify Conditional XHR Breakpoints support within the
Net panel.
Open Firebug and select the Net panel.
Click on this button to execute XHR.
Use a Breakpoint bar to create a new breakpoint for the request.
Click on this button to execute the same XHR.
Firebug must halt the JS execution.
Try to specify a condition for the breakpoint (right click on it) and execute
further request using buttons below.
Example expressions: count == 1 $postBody.indexOf("Example") >= 0