Bug 1131043 - Part 1: Add Symbol.species. r=evilpie

js/src/jsapi.h

@@ -4347,12 +4347,13 @@ GetSymbolDescription(HandleSymbol symbol);
 enum class SymbolCode : uint32_t {
     iterator,                       // Symbol.iterator
     match,                          // Symbol.match
+    species,                        // Symbol.species
     InSymbolRegistry = 0xfffffffe,  // created by Symbol.for() or JS::GetSymbolFor()
     UniqueSymbol = 0xffffffff       // created by Symbol() or JS::NewSymbol()
 };
 
 /* For use in loops that iterate over the well-known symbols. */
-const size_t WellKnownSymbolLimit = 2;
+const size_t WellKnownSymbolLimit = 3;
 
 /*
  * Return the SymbolCode telling what sort of symbol `symbol` is.

js/src/tests/ecma_6/Symbol/well-known.js

@@ -4,6 +4,7 @@
 var names = [
     "iterator",
     "match",
+    "species",
 ];
 
 for (var name of names) {

js/src/vm/CommonPropertyNames.h

@@ -248,6 +248,7 @@
      * enum JS::SymbolCode in jsapi.h. */ \
     macro(iterator, iterator, "iterator") \
     macro(match, match, "match") \
+    macro(species, species, "species") \
     /* Same goes for the descriptions of the well-known symbols. */ \
     macro(Symbol_create, Symbol_create, "Symbol.create") \
     macro(Symbol_hasInstance, Symbol_hasInstance, "Symbol.hasInstance") \
@@ -255,6 +256,7 @@
     macro(Symbol_isRegExp, Symbol_isRegExp, "Symbol.isRegExp") \
     macro(Symbol_iterator, Symbol_iterator, "Symbol.iterator") \
     macro(Symbol_match,    Symbol_match,    "Symbol.match") \
+    macro(Symbol_species,  Symbol_species,  "Symbol.species") \
     macro(Symbol_toPrimitive, Symbol_toPrimitive, "Symbol.toPrimitive") \
     macro(Symbol_toStringTag, Symbol_toStringTag, "Symbol.toStringTag") \
     macro(Symbol_unscopables, Symbol_unscopables, "Symbol.unscopables") \

js/src/vm/Runtime.h

@@ -430,6 +430,7 @@ struct WellKnownSymbols
 {
     js::ImmutableSymbolPtr iterator;
     js::ImmutableSymbolPtr match;
+    js::ImmutableSymbolPtr species;
 
     const ImmutableSymbolPtr& get(size_t u) const {
         MOZ_ASSERT(u < JS::WellKnownSymbolLimit);