Unify internal and external typed arrays a bit

src/factory.cc

 // Copyright 2014 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/factory.h"
 
 #include "src/allocation-site-scopes.h"
 #include "src/base/bits.h"
 #include "src/bootstrapper.h"
 #include "src/conversions.h"
@@ skipping 1969 matching lines @@
   CHECK(number_of_elements <= static_cast<size_t>(Smi::kMaxValue));
   size_t byte_length = number_of_elements * element_size;
 
   obj->set_byte_offset(Smi::FromInt(0));
   i::Handle<i::Object> byte_length_object =
       isolate()->factory()->NewNumberFromSize(byte_length);
   obj->set_byte_length(*byte_length_object);
   Handle<Object> length_object = NewNumberFromSize(number_of_elements);
   obj->set_length(*length_object);
 
-  obj->set_buffer(Smi::FromInt(0));
+  Handle<JSArrayBuffer> buffer = isolate()->factory()->NewJSArrayBuffer();
+  Runtime::SetupArrayBuffer(isolate(), buffer, true, NULL, byte_length);
+  obj->set_buffer(*buffer);
   Handle<FixedTypedArrayBase> elements =
       isolate()->factory()->NewFixedTypedArray(
           static_cast<int>(number_of_elements), array_type);
   obj->set_elements(*elements);
   return obj;
 }
 
 
 Handle<JSDataView> Factory::NewJSDataView(Handle<JSArrayBuffer> buffer,
                                           size_t byte_offset,
@@ skipping 474 matching lines @@
   return Handle<Object>::null();
 }
 
 
 Handle<Object> Factory::ToBoolean(bool value) {
   return value ? true_value() : false_value();
 }
 
 
 } }  // namespace v8::internal