Bug 1312345 - Add missing header after bug 1277359. r=rillian

MozReview-Commit-ID: 7AH7mri8GBw

--HG--
extra : rebase_source : 4fac07d19e79bbe4351a77ecdc519749af69e52b

dom/base/Navigator.cpp

@@ -53,6 +53,7 @@
 #include "mozilla/Hal.h"
 #include "nsISiteSpecificUserAgent.h"
 #include "mozilla/ClearOnShutdown.h"
+#include "mozilla/SSE.h"
 #include "mozilla/StaticPtr.h"
 #include "Connection.h"
 #include "mozilla/dom/Event.h" // for nsIDOMEvent::InternalDOMEvent()