Implement Harmony sets and maps.

src/bootstrapper.cc

Index: src/bootstrapper.cc
diff --git a/src/bootstrapper.cc b/src/bootstrapper.cc
index 04eb009c71b79e53c678f60ce714ba574ef855d3..7ddc9a64dee4efcd21aba5de25484a3b7712f160 100644
--- a/src/bootstrapper.cc
+++ b/src/bootstrapper.cc
@@ -1227,7 +1227,19 @@ void Genesis::InitializeExperimentalGlobal() {
   Handle<JSObject> global = Handle<JSObject>(global_context()->global());
 
   // TODO(mstarzinger): Move this into Genesis::InitializeGlobal once we no
-  // longer need to live behind a flag, so WeakMap gets added to the snapshot.
+  // longer need to live behind a flag, so functions get added to the snapshot.
+  if (FLAG_harmony_collections) {  // -- S e t
+    Handle<JSObject> prototype =
+        factory()->NewJSObject(isolate()->object_function(), TENURED);
+    InstallFunction(global, "Set", JS_SET_TYPE, JSSet::kSize,
+                    prototype, Builtins::kIllegal, true);
+  }
+  if (FLAG_harmony_collections) {  // -- M a p
+    Handle<JSObject> prototype =
+        factory()->NewJSObject(isolate()->object_function(), TENURED);
+    InstallFunction(global, "Map", JS_MAP_TYPE, JSMap::kSize,
+                    prototype, Builtins::kIllegal, true);
+  }
   if (FLAG_harmony_weakmaps) {  // -- W e a k M a p
     Handle<JSObject> prototype =
         factory()->NewJSObject(isolate()->object_function(), TENURED);
@@ -1740,6 +1752,11 @@ bool Genesis::InstallExperimentalNatives() {
                "native proxy.js") == 0) {
       if (!CompileExperimentalBuiltin(isolate(), i)) return false;
     }
+    if (FLAG_harmony_collections &&
+        strcmp(ExperimentalNatives::GetScriptName(i).start(),
+               "native collection.js") == 0) {
+      if (!CompileExperimentalBuiltin(isolate(), i)) return false;
+    }
     if (FLAG_harmony_weakmaps &&
         strcmp(ExperimentalNatives::GetScriptName(i).start(),
                "native weakmap.js") == 0) {