Revert of [stubs] Fix AccessorInfo mixup in KeyedStoreGeneric

src/ic/keyed-store-generic.cc

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/ic/keyed-store-generic.h"
 
 #include "src/code-factory.h"
 #include "src/code-stub-assembler.h"
 #include "src/contexts.h"
 #include "src/ic/accessor-assembler-impl.h"
@@ skipping 658 matching lines @@
                                      &readonly, slow);
       Add<NameDictionary>(properties, p->name, p->value, slow);
       Return(p->value);
     }
   }
 
   Bind(&accessor);
   {
     Label not_callable(this);
     Node* accessor_pair = var_accessor_pair.value();
-    GotoIf(IsAccessorInfoMap(LoadMap(accessor_pair)), slow);
+    GotoIf(IsAccessorPairMap(LoadMap(accessor_pair)), slow);
     CSA_ASSERT(this, HasInstanceType(accessor_pair, ACCESSOR_PAIR_TYPE));
     Node* setter = LoadObjectField(accessor_pair, AccessorPair::kSetterOffset);
     Node* setter_map = LoadMap(setter);
     // FunctionTemplateInfo setters are not supported yet.
     GotoIf(IsFunctionTemplateInfoMap(setter_map), slow);
     GotoUnless(IsCallableMap(setter_map), &not_callable);
 
     Callable callable = CodeFactory::Call(isolate());
     CallJS(callable, p->context, setter, receiver, p->value);
     Return(p->value);
@@ skipping 89 matching lines @@
   Bind(&slow);
   {
     Comment("KeyedStoreGeneric_slow");
     TailCallRuntime(Runtime::kSetProperty, context, receiver, name, value,
                     SmiConstant(language_mode));
   }
 }
 
 }  // namespace internal
 }  // namespace v8