Bug 1336223 part 3: Add a missing #include to nsComputedDOMStyle.cpp. r=xidorn

MozReview-Commit-ID: ERFagYJrxeA

--HG--
extra : rebase_source : 93cdd1f05529471a1fcc7b34edb029bf7ac55b89

layout/style/nsComputedDOMStyle.cpp

@@ -38,6 +38,7 @@
 #include "nsCSSPseudoElements.h"
 #include "mozilla/StyleSetHandle.h"
 #include "mozilla/StyleSetHandleInlines.h"
+#include "mozilla/RestyleManager.h"
 #include "imgIRequest.h"
 #include "nsLayoutUtils.h"
 #include "nsCSSKeywords.h"