[wasm] Block compile/instantiate of large array buffers

third_party/WebKit/LayoutTests/fast/wasm/wasm-limits-worker.js

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+this.importScripts("wasm-constants.js");
+this.importScripts("wasm-module-builder.js");
+this.importScripts("wasm-limits-tests-common.js");
+
+onmessage = function(limit) {
+  var buffer = createTestBuffers(limit).large;
+  var m = undefined;
+  var i = undefined;
+  try {
+    m = new WebAssembly.Module(buffer);
+    i = new WebAssembly.Instance(m);
+  } catch (e) {
+    postMessage(false);
+  }
+  postMessage(m instanceof WebAssembly.Module &&
+              i instanceof WebAssembly.Instance);
+}