Added an extra flag that enables only ArrayBuffer.

src/arraybuffer.js

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
 //       with the distribution.
 //     * Neither the name of Google Inc. nor the names of its
 //       contributors may be used to endorse or promote products derived
 //       from this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 "use strict";
 
-// This file relies on the fact that the following declarations have been made
-// in runtime.js:
-// var $Function = global.Function;
+var $ArrayBuffer = global.ArrayBuffer;
 
-// ----------------------------------------------------------------------------
+// -------------------------------------------------------------------
+
+function ArrayBufferConstructor(byteLength) { // length = 1
+  if (%_IsConstructCall()) {
+    var l = TO_POSITIVE_INTEGER(byteLength);
+    %ArrayBufferInitialize(this, l);
+  } else {
+    return new $ArrayBuffer(byteLength);
+  }
+}
+
+function ArrayBufferGetByteLength() {
+  if (!IS_ARRAYBUFFER(this)) {
+    throw MakeTypeError('incompatible_method_receiver',
+                        ['ArrayBuffer.prototype.byteLength', this]);
+  }
+  return %ArrayBufferGetByteLength(this);
+}
+
+// ES6 Draft 15.13.5.5.3
+function ArrayBufferSlice(start, end) {
+  if (!IS_ARRAYBUFFER(this)) {
+    throw MakeTypeError('incompatible_method_receiver',
+                        ['ArrayBuffer.prototype.slice', this]);
+  }
+
+  var relativeStart = TO_INTEGER(start);
+  var first;
+  if (relativeStart < 0) {
+    first = MathMax(this.byteLength + relativeStart, 0);
+  } else {
+    first = MathMin(relativeStart, this.byteLength);
+  }
+  var relativeEnd = IS_UNDEFINED(end) ? this.byteLength : TO_INTEGER(end);
+  var fin;
+  if (relativeEnd < 0) {
+    fin = MathMax(this.byteLength + relativeEnd, 0);
+  } else {
+    fin = MathMin(relativeEnd, this.byteLength);
+  }
+
+  var newLen = fin - first;
+  // TODO(dslomov): implement inheritance
+  var result = new $ArrayBuffer(newLen);
+
+  %ArrayBufferSliceImpl(this, result, first);
+  return result;
+}
+
+function SetUpArrayBuffer() {
+  %CheckIsBootstrapping();
+
+  // Set up the ArrayBuffer constructor function.
+  %SetCode($ArrayBuffer, ArrayBufferConstructor);
+  %FunctionSetPrototype($ArrayBuffer, new $Object());
+
+  // Set up the constructor property on the ArrayBuffer prototype object.
+  %SetProperty($ArrayBuffer.prototype, "constructor", $ArrayBuffer, DONT_ENUM);
+
+  InstallGetter($ArrayBuffer.prototype, "byteLength", ArrayBufferGetByteLength);
+
+  InstallFunctions($ArrayBuffer.prototype, DONT_ENUM, $Array(
+      "slice", ArrayBufferSlice
+  ));
+}
+
+SetUpArrayBuffer();
 
 
-// TODO(wingo): Give link to specification. For now, the following diagram is
-// the spec:
-// http://wiki.ecmascript.org/lib/exe/fetch.php?cache=cache&media=harmony:es6_generator_object_model_3-29-13.png
-
-function GeneratorObjectNext() {
-  if (!IS_GENERATOR(this)) {
-    throw MakeTypeError('incompatible_method_receiver',
-                        ['[Generator].prototype.next', this]);
-  }
-
-  return %_GeneratorSend(this, void 0);
-}
-
-function GeneratorObjectSend(value) {
-  if (!IS_GENERATOR(this)) {
-    throw MakeTypeError('incompatible_method_receiver',
-                        ['[Generator].prototype.send', this]);
-  }
-
-  return %_GeneratorSend(this, value);
-}
-
-function GeneratorObjectThrow(exn) {
-  if (!IS_GENERATOR(this)) {
-    throw MakeTypeError('incompatible_method_receiver',
-                        ['[Generator].prototype.throw', this]);
-  }
-
-  return %_GeneratorThrow(this, exn);
-}
-
-function SetUpGenerators() {
-  %CheckIsBootstrapping();
-  var GeneratorObjectPrototype = GeneratorFunctionPrototype.prototype;
-  InstallFunctions(GeneratorObjectPrototype,
-                   DONT_ENUM | DONT_DELETE | READ_ONLY,
-                   ["next", GeneratorObjectNext,
-                    "send", GeneratorObjectSend,
-                    "throw", GeneratorObjectThrow]);
-  %SetProperty(GeneratorObjectPrototype, "constructor",
-               GeneratorFunctionPrototype, DONT_ENUM | DONT_DELETE | READ_ONLY);
-  %SetPrototype(GeneratorFunctionPrototype, $Function.prototype);
-  %SetProperty(GeneratorFunctionPrototype, "constructor",
-               GeneratorFunction, DONT_ENUM | DONT_DELETE | READ_ONLY);
-  %SetPrototype(GeneratorFunction, $Function);
-}
-
-SetUpGenerators();