Bug 758992 - Make the classes which use the XPCOM nsISupports implementation macros final, to avoid the warning about deleting using a pointer to a base class with virtual functions and no virtual dtor (chrome/ parts); r=bsmedberg

chrome/src/nsChromeProtocolHandler.h

@@ -8,6 +8,7 @@
 
 #include "nsIProtocolHandler.h"
 #include "nsWeakReference.h"
+#include "mozilla/Attributes.h"
 
 #define NS_CHROMEPROTOCOLHANDLER_CID                 \
 { /* 61ba33c0-3031-11d3-8cd0-0060b0fc14a3 */         \
@@ -17,7 +18,8 @@
     {0x8c, 0xd0, 0x00, 0x60, 0xb0, 0xfc, 0x14, 0xa3} \
 }
 
-class nsChromeProtocolHandler : public nsIProtocolHandler, public nsSupportsWeakReference
+class nsChromeProtocolHandler MOZ_FINAL : public nsIProtocolHandler,
+                                          public nsSupportsWeakReference
 {
 public:
     NS_DECL_ISUPPORTS