Issue #679

This test-case is intended for Issue #679 - Firebug 1.2.0a27X blocking most AJAX calls.
This test-case is also intended for Bug #433711 - nsHttpChannel::InstallCacheListener init fails OBJ_IS_NOT_GLOBAL here is not really right

1. Put breakpoint in the following method:

   nsHttpChannel::InstallCacheListener(PRUint32 offset)

   at the row where stream-listener-tee "@mozilla.org/network/stream-listener-tee;1" is initialized:

   tee->Init(mListener, out);

2. Use the button below to initiate a GET request (it will generate XMLHttpRequests).
3. The breakpoint should be hit. Step to the next line and see the result value - it's

   NS_ERROR_FAILURE (rv = 0x80004005)

4. There should be error entry (represents the XHR) in the FB Console panel (if show XMLHttpRequests option is on).