Revert of [stubs] Fix AccessorInfo mixup in KeyedStoreGeneric (patchset #1...

Revert of [stubs] Fix AccessorInfo mixup in KeyedStoreGeneric (patchset #1 id:1 of https://codereview.chromium.org/2525913002/ )

Reason for revert:
Needed to revert 2661b3e8

Original issue's description:
> [stubs] Fix AccessorInfo mixup in KeyedStoreGeneric
>
> BUG=chromium:668101
>
> Committed: https://crrev.com/2661b3e8a5447773a23a219ba085454c459b654b
> Cr-Commit-Position: refs/heads/master@{#41223}

TBR=ishell@chromium.org,jkummerow@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:668101

Review-Url: https://codereview.chromium.org/2525253002
Cr-Commit-Position: refs/heads/master@{#41250}

src/code-stub-assembler.h

@@ -21,7 +21,7 @@ class StubCache;
 enum class PrimitiveType { kBoolean, kNumber, kString, kSymbol };
 
 #define HEAP_CONSTANT_LIST(V)                         \
-  V(AccessorInfoMap, AccessorInfoMap)                 \
+  V(AccessorPairMap, AccessorPairMap)                 \
   V(BooleanMap, BooleanMap)                           \
   V(CodeMap, CodeMap)                                 \
   V(empty_string, EmptyString)                        \

src/ic/keyed-store-generic.cc

@@ -676,7 +676,7 @@ void KeyedStoreGenericAssembler::EmitGenericPropertyStore(
   {
     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);

test/mjsunit/regress/regress-crbug-668101.js

-// 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.
-
-// Flags: --allow-natives-syntax
-
-function f(a, i, v) {
-  a[i] = v;
-}
-
-f("make it generic", 0, 0);
-
-var a = new Array(3);
-// Fast properties.
-f(a, "length", 2);
-assertEquals(2, a.length);
-
-// Dictionary properties.
-%OptimizeObjectForAddingMultipleProperties(a, 1);
-f(a, "length", 1);
-assertEquals(1, a.length);