[GC] Check for incremental marking when a GC is triggered on reaching the external allocation limit

test/mjsunit/regress/regress-517195.js

+// Copyright 2015 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.
+
+// Flags: --invoke-weak-callbacks --omit-quit --noincremental-marking --random-seed=866466637
+//
+// Test requires ASAN.

[Hannes Payer (out of office), 2015/08/06 09:48:04]

really?

[Michael Lippautz, 2015/08/06 09:54:26]

just kidding -- no asan required ;)

+
+(function __f_25() {
+  var __v_4 = new ArrayBuffer(1073741823);
+})();