DataView implementation.

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index 1e9d2cea660781b9b132e32b2718f224e4ad8a45..65b4447339db2b8f38c3aa5a195dd09519420790 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -1631,6 +1631,7 @@ void HeapObject::IterateBody(InstanceType type, int object_size,
     case JS_ARRAY_TYPE:
     case JS_ARRAY_BUFFER_TYPE:
     case JS_TYPED_ARRAY_TYPE:
+    case JS_DATA_VIEW_TYPE:
     case JS_SET_TYPE:
     case JS_MAP_TYPE:
     case JS_WEAK_MAP_TYPE:
@@ -15804,9 +15805,19 @@ void JSArrayBuffer::Neuter() {
 }
 
 
-void JSTypedArray::Neuter() {
+void JSArrayBufferView::NeuterView() {
   set_byte_offset(Smi::FromInt(0));
   set_byte_length(Smi::FromInt(0));
+}
+
+
+void JSDataView::Neuter() {
+  NeuterView();
+}
+
+
+void JSTypedArray::Neuter() {
+  NeuterView();
   set_length(Smi::FromInt(0));
   set_elements(GetHeap()->EmptyExternalArrayForMap(map()));
 }