Changing CID format. r=dveditz

xpcom/io/nsIFile.idl

@@ -260,13 +260,7 @@ interface nsIFile : nsISupports
 #include "nsIProperties.h"
 #include "nsCOMPtr.h"
 
-#define NS_DIRECTORY_SERVICE_CID                     \
-{ /* f00152d0-b40b-11d3-8c9c-000064657374 */         \
-    0xf00152d0,                                      \
-    0xb40b,                                          \
-    0x11d3,                                          \
-    {0x8c, 0x9c, 0x00, 0x00, 0x64, 0x65, 0x73, 0x74} \
-}
+#define NS_DIRECTORY_SERVICE_CID  {0xf00152d0,0xb40b,0x11d3,{0x8c, 0x9c, 0x00, 0x00, 0x64, 0x65, 0x73, 0x74}}
 
 inline nsresult
 NS_GetSpecialDirectory(const char* specialDirName, nsIFile* *result)