Move creation of collection prototypes into JavaScript.

src/bootstrapper.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1257 matching lines @@
     // --- S y m b o l ---
     Handle<JSFunction> symbol_fun =
         InstallFunction(global, "Symbol", JS_VALUE_TYPE, JSValue::kSize,
                         isolate()->initial_object_prototype(),
                         Builtins::kIllegal, true);
     native_context()->set_symbol_function(*symbol_fun);
   }
 
   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);
+                      isolate()->initial_object_prototype(),
+                      Builtins::kIllegal, true);
     }
     {  // -- M a p
-      Handle<JSObject> prototype =
-          factory()->NewJSObject(isolate()->object_function(), TENURED);
       InstallFunction(global, "Map", JS_MAP_TYPE, JSMap::kSize,
-                      prototype, Builtins::kIllegal, true);
+                      isolate()->initial_object_prototype(),
+                      Builtins::kIllegal, true);
     }
     {  // -- W e a k M a p
-      Handle<JSObject> prototype =
-          factory()->NewJSObject(isolate()->object_function(), TENURED);
       InstallFunction(global, "WeakMap", JS_WEAK_MAP_TYPE, JSWeakMap::kSize,
-                      prototype, Builtins::kIllegal, true);
+                      isolate()->initial_object_prototype(),
+                      Builtins::kIllegal, true);
     }
   }
 
   if (FLAG_harmony_typed_arrays) {
-    { // -- A r r a y B u f f e r
-      Handle<JSObject> prototype =
-          factory()->NewJSObject(isolate()->object_function(), TENURED);
+    {  // -- A r r a y B u f f e r
       InstallFunction(global, "__ArrayBuffer", JS_ARRAY_BUFFER_TYPE,
-                      JSArrayBuffer::kSize, prototype,
+                      JSArrayBuffer::kSize,
+                      isolate()->initial_object_prototype(),
                       Builtins::kIllegal, true);
     }
   }
 }
 
 
 bool Genesis::CompileBuiltin(Isolate* isolate, int index) {
   Vector<const char> name = Natives::GetScriptName(index);
   Handle<String> source_code =
       isolate->bootstrapper()->NativesSourceLookup(index);
@@ skipping 1179 matching lines @@
   return from + sizeof(NestingCounterType);
 }
 
 
 // Called when the top-level V8 mutex is destroyed.
 void Bootstrapper::FreeThreadResources() {
   ASSERT(!IsActive());
 }
 
 } }  // namespace v8::internal