Bug #285772 --> part of the theme restructuring work.

fix missing offline indicator and broken activity indicator icon in the toolbar on Mac OS X.

mail/themes/pinstripe/mail/messenger.css

@@ -41,6 +41,7 @@
 
 @import url("chrome://messenger/content/messenger.css");
 @import url("chrome://global/skin/");
+@import url("chrome://communicator/skin/");
 
 @namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");