Bug 1363037 - Add missing gfxVR.h include to VRServiceTest.h to fix bustage. r=kip

--HG--
extra : amend_source : 8cef725e5c92c2f472e8299356e67afa67bb4c4e

dom/vr/VRServiceTest.h

@@ -10,6 +10,8 @@
 #include "mozilla/DOMEventTargetHelper.h"
 #include "mozilla/dom/VRServiceTestBinding.h"
 
+#include "gfxVR.h"
+
 namespace mozilla {
 namespace dom {