Bug 478190 - LLP64 (Windows x64) support for /mozilla/dom. r/sr=peterv

dom/base/nsDOMClassInfo.h

@@ -88,7 +88,7 @@ struct nsExternalDOMClassInfoData : public nsDOMClassInfoData
 };
 
 
-typedef unsigned long PtrBits;
+typedef PRUptrdiff PtrBits;
 
 // To be used with the nsDOMClassInfoData::mCachedClassInfo pointer.
 // The low bit is set when we created a generic helper for an external

dom/base/nsWrapperCache.h

@@ -40,7 +40,7 @@
 
 #include "nsCycleCollectionParticipant.h"
 
-typedef unsigned long PtrBits;
+typedef PRUptrdiff PtrBits;
 
 #define NS_WRAPPERCACHE_IID \
 { 0x3a51ca81, 0xddab, 0x422c, \