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

test/mjsunit/get-prototype-of.js

Index: test/mjsunit/get-prototype-of.js
diff --git a/test/mjsunit/get-prototype-of.js b/test/mjsunit/get-prototype-of.js
index a6acf670d177df615868657bd11f375f2b81d8ea..47edcb0a771123f03dbd275ccf20a3872f2d58bc 100644
--- a/test/mjsunit/get-prototype-of.js
+++ b/test/mjsunit/get-prototype-of.js
@@ -77,6 +77,7 @@
 // Builtin constructors.
 var functions = [
   Array,
+  ArrayBuffer,
   Boolean,
   // DataView,
   Date,
@@ -111,8 +112,5 @@
 var p = new Promise(function() {});
 assertPrototypeOf(p, Promise.prototype);
 
-var ab = new ArrayBuffer(0);
-assertPrototypeOf(ab, ArrayBuffer.prototype);
-
-var dv = new DataView(ab);
+var dv = new DataView(new ArrayBuffer());
 assertPrototypeOf(dv, DataView.prototype);