Add internal fields to JSArrayBufferViews (JSTypedArray and JSDataView)

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 416ed7fcda6ba35b5144f95144f10348225a5723..a212cbdc7f6e73787f31750ac91ebe93df2a9c5d 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -8921,6 +8921,9 @@ class JSTypedArray: public JSArrayBufferView {
   static const int kLengthOffset = kViewSize + kPointerSize;
   static const int kSize = kLengthOffset + kPointerSize;
 
+  static const int kSizeWithInternalFields =
+      kSize + v8::ArrayBufferView::kInternalFieldCount * kPointerSize;
+
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(JSTypedArray);
 };
@@ -8940,6 +8943,9 @@ class JSDataView: public JSArrayBufferView {
 
   static const int kSize = kViewSize;
 
+  static const int kSizeWithInternalFields =
+      kSize + v8::ArrayBufferView::kInternalFieldCount * kPointerSize;
+
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(JSDataView);
 };