[heap] Track length for array buffers to avoid free-ing dependency

test/mjsunit/regress/regress-625752.js

Index: test/mjsunit/regress/regress-625752.js
diff --git a/test/mjsunit/regress/regress-625752.js b/test/mjsunit/regress/regress-625752.js
new file mode 100644
index 0000000000000000000000000000000000000000..e0e9558f2934672aa54ee80495c5a4ef13cdd0ae
--- /dev/null
+++ b/test/mjsunit/regress/regress-625752.js
@@ -0,0 +1,10 @@
+// Copyright 2016 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+v3 = Math.floor(0xFFFFFFFF / 4) + 1;
+Object.prototype.__defineGetter__(1, function() {
+this[1] = Array(0x8000).join();
+})
+try { v38 = new ArrayBuffer(v3); } catch (e) {}
+try { v41 = new Intl.DateTimeFormat(); } catch (e) {}