Revert of [es6] Correctify and unify ArrayBuffer and SharedArrayBuffer constructors.

src/builtins.cc

Index: src/builtins.cc
diff --git a/src/builtins.cc b/src/builtins.cc
index dff9d41fde5469d452f6e951d1d89d138d726e8b..c48fb80bfa53705914037b4a2c8aa72de9bda720 100644
--- a/src/builtins.cc
+++ b/src/builtins.cc
@@ -1755,66 +1755,6 @@
 }
 
 
-// ES6 section 24.1.2.1 ArrayBuffer( length ) for the [[Call]] case.
-BUILTIN(ArrayBufferConstructor) {
-  HandleScope scope(isolate);
-  Handle<JSFunction> target = args.target();
-  DCHECK(*target == target->native_context()->array_buffer_fun() ||
-         *target == target->native_context()->shared_array_buffer_fun());
-  THROW_NEW_ERROR_RETURN_FAILURE(
-      isolate, NewTypeError(MessageTemplate::kConstructorNotFunction,
-                            handle(target->shared()->name(), isolate)));
-}
-
-
-// ES6 section 24.1.2.1 ArrayBuffer( length ) for the [[Construct]] case.
-BUILTIN(ArrayBufferConstructor_ConstructStub) {
-  HandleScope scope(isolate);
-  DCHECK_EQ(2, args.length());
-  Handle<JSFunction> target = args.target();
-  Handle<JSReceiver> new_target = Handle<JSReceiver>::cast(args.new_target());
-  Handle<Object> length = args.at<Object>(1);
-  DCHECK(*target == target->native_context()->array_buffer_fun() ||
-         *target == target->native_context()->shared_array_buffer_fun());
-  // The ConstructStub is executed in the context of the caller, so we need
-  // to enter the callee context first before raising an exception.
-  isolate->set_context(args.target()->context());
-  Handle<Object> number_length;
-  ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, number_length,
-                                     Object::ToNumber(length));
-  size_t byte_length;
-  if (!TryNumberToSize(isolate, *number_length, &byte_length)) {
-    THROW_NEW_ERROR_RETURN_FAILURE(
-        isolate, NewRangeError(MessageTemplate::kInvalidArrayBufferLength));
-  }
-  Handle<Map> initial_map;
-  ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
-      isolate, initial_map,
-      JSFunction::GetDerivedMap(isolate, target, new_target));
-  Handle<JSArrayBuffer> result = Handle<JSArrayBuffer>::cast(
-      isolate->factory()->NewJSObjectFromMap(initial_map));
-  SharedFlag shared_flag =
-      (*target == target->native_context()->array_buffer_fun())
-          ? SharedFlag::kNotShared
-          : SharedFlag::kShared;
-  if (!JSArrayBuffer::SetupAllocatingData(result, isolate, byte_length, true,
-                                          shared_flag)) {
-    THROW_NEW_ERROR_RETURN_FAILURE(
-        isolate, NewRangeError(MessageTemplate::kArrayBufferAllocationFailed));
-  }
-  return *result;
-}
-
-
-// ES6 section 24.1.3.1 ArrayBuffer.isView ( arg )
-BUILTIN(ArrayBufferIsView) {
-  SealHandleScope shs(isolate);
-  DCHECK_EQ(2, args.length());
-  Object* arg = args[1];
-  return isolate->heap()->ToBoolean(arg->IsJSArrayBufferView());
-}
-
-
 namespace {
 
 // ES6 section 9.5.15 ProxyCreate (target, handler)