Bug 1236373 - Fix JSCLASS_CACHED_PROTO_WIDTH's definition when it appears outside the js namespace. r=jwalden

--HG--
extra : rebase_source : 27179d493978c6d5dbc1f5c7d05a6597ae9a0109

js/public/Class.h

@@ -730,7 +730,7 @@ struct JSClass {
 
 // Fast access to the original value of each standard class's prototype.
 #define JSCLASS_CACHED_PROTO_SHIFT      (JSCLASS_HIGH_FLAGS_SHIFT + 10)
-#define JSCLASS_CACHED_PROTO_MASK       JS_BITMASK(JSCLASS_CACHED_PROTO_WIDTH)
+#define JSCLASS_CACHED_PROTO_MASK       JS_BITMASK(js::JSCLASS_CACHED_PROTO_WIDTH)
 #define JSCLASS_HAS_CACHED_PROTO(key)   (uint32_t(key) << JSCLASS_CACHED_PROTO_SHIFT)
 #define JSCLASS_CACHED_PROTO_KEY(clasp) ((JSProtoKey)                         \
                                          (((clasp)->flags                     \