Remove now-incorrect DataView accessor optimization

src/accessors.cc

 // Copyright 2012 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/accessors.h"
 
 #include "src/api.h"
 #include "src/contexts.h"
 #include "src/deoptimizer.h"
 #include "src/execution.h"
@@ skipping 68 matching lines @@
       if (map->instance_type() < FIRST_NONSTRING_TYPE) {
         return CheckForName(name, isolate->factory()->length_string(),
                             String::kLengthOffset, object_offset);
       }
 
       return false;
   }
 }
 
 
-bool Accessors::IsJSArrayBufferViewFieldAccessor(Handle<Map> map,
-                                                 Handle<Name> name,
-                                                 int* object_offset) {
-  DCHECK(name->IsUniqueName());
-  Isolate* isolate = name->GetIsolate();
-
-  switch (map->instance_type()) {
-    case JS_DATA_VIEW_TYPE:
-      return CheckForName(name, isolate->factory()->byte_length_string(),
-                          JSDataView::kByteLengthOffset, object_offset) ||
-             CheckForName(name, isolate->factory()->byte_offset_string(),
-                          JSDataView::kByteOffsetOffset, object_offset);
-    default:
-      return false;
-  }
-}
-
 namespace {
 
 MUST_USE_RESULT MaybeHandle<Object> ReplaceAccessorWithDataProperty(
     Isolate* isolate, Handle<Object> receiver, Handle<JSObject> holder,
     Handle<Name> name, Handle<Object> value) {
   LookupIterator it(receiver, name, holder,
                     LookupIterator::OWN_SKIP_INTERCEPTOR);
   // Skip any access checks we might hit. This accessor should never hit in a
   // situation where the caller does not have access.
   if (it.state() == LookupIterator::ACCESS_CHECK) {
@@ skipping 1064 matching lines @@
   Isolate* isolate = name->GetIsolate();
   Handle<AccessorInfo> info = MakeAccessor(isolate, name, &ModuleGetExport,
                                            &ModuleSetExport, attributes);
   info->set_data(Smi::FromInt(index));
   return info;
 }
 
 
 }  // namespace internal
 }  // namespace v8