Unify internal and external typed arrays a bit

src/objects-inl.h

 // 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.
 //
 // Review notes:
 //
 // - The use of macros in these inline functions may seem superfluous
 // but it is absolutely needed to make sure gcc generates optimal
 // code. gcc is not happy when attempting to inline too deep.
 //
@@ skipping 6484 matching lines @@
 
 
 ACCESSORS(JSArrayBufferView, buffer, Object, kBufferOffset)
 #ifdef VERIFY_HEAP
 ACCESSORS(JSArrayBufferView, raw_byte_offset, Object, kByteOffsetOffset)
 ACCESSORS(JSArrayBufferView, raw_byte_length, Object, kByteLengthOffset)
 #endif
 
 
 bool JSArrayBufferView::WasNeutered() const {
-  return !buffer()->IsSmi() && JSArrayBuffer::cast(buffer())->was_neutered();
+  return JSArrayBuffer::cast(buffer())->was_neutered();
 }
 
 
 Object* JSTypedArray::length() const {
   if (WasNeutered()) return Smi::FromInt(0);
   return Object::cast(READ_FIELD(this, kLengthOffset));
 }
 
 
 void JSTypedArray::set_length(Object* value, WriteBarrierMode mode) {
@@ skipping 1087 matching lines @@
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 #undef NOBARRIER_READ_BYTE_FIELD
 #undef NOBARRIER_WRITE_BYTE_FIELD
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_