Bug 1292289, part 1 - Stop unnecessarily using xpcprivate in XPCWrapper.h. r=mrbkap

This file is included in caps/, but it only uses generic JS things,
aside from a macro.

AccessCheck.cpp was bootlegging xpcprivate.h.

MozReview-Commit-ID: C6fGOFxsTvg

--HG--
extra : rebase_source : bd5e7bf9010acf83ccab8ce6cce77a557ad76196

js/xpconnect/src/XPCWrapper.h

@@ -7,8 +7,7 @@
 #ifndef XPC_WRAPPER_H
 #define XPC_WRAPPER_H 1
 
-#include "xpcprivate.h"
-#include "jswrapper.h"
+#include "js/TypeDecls.h"
 
 namespace XPCNativeWrapper {
 

js/xpconnect/wrappers/AccessCheck.cpp

@@ -19,6 +19,7 @@
 #include "mozilla/jsipc/CrossProcessObjectWrappers.h"
 #include "nsIDOMWindowCollection.h"
 #include "nsJSUtils.h"
+#include "xpcprivate.h"
 
 using namespace mozilla;
 using namespace JS;