Revert "ES6: Add support for Map/Set forEach"

src/arm64/full-codegen-arm64.cc

 // Copyright 2013 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 4688 matching lines @@
 
   __ Bind(&done);
   context()->Plug(result_register());
 }
 
 
 void FullCodeGenerator::EmitCreateIteratorResult(bool done) {
   Label gc_required;
   Label allocated;
 
-  Handle<Map> map(isolate()->native_context()->iterator_result_map());
+  Handle<Map> map(isolate()->native_context()->generator_result_map());
 
   // Allocate and populate an object with this form: { value: VAL, done: DONE }
 
   Register result = x0;
   __ Allocate(map->instance_size(), result, x10, x11, &gc_required, TAG_OBJECT);
   __ B(&allocated);
 
   __ Bind(&gc_required);
   __ Push(Smi::FromInt(map->instance_size()));
   __ CallRuntime(Runtime::kHiddenAllocateInNewSpace, 1);
@@ skipping 274 matching lines @@
   return previous_;
 }
 
 
 #undef __
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM64