Bug 1256428 P0 Fix unified build failures in dom/workers. r=jdm

dom/workers/WorkerNavigator.cpp

@@ -26,6 +26,8 @@
 namespace mozilla {
 namespace dom {
 
+using namespace mozilla::dom::workers;
+
 NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_0(WorkerNavigator)
 
 NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(WorkerNavigator, AddRef)

dom/workers/WorkerPrivate.cpp

@@ -102,6 +102,7 @@
 #include "SharedWorker.h"
 #include "WorkerDebuggerManager.h"
 #include "WorkerFeature.h"
+#include "WorkerNavigator.h"
 #include "WorkerRunnable.h"
 #include "WorkerScope.h"
 #include "WorkerThread.h"