[wasm] enable wasm structured cloning in specific cases

third_party/WebKit/LayoutTests/http/tests/wasm/wasm_serialization_tests.js

 // Copyright 2016 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.
 
 function TestInstantiateInWorker() {
   return createWasmModule()
     .then((mod) => {
       var worker = new Worker("wasm_serialization_worker.js");
       return new Promise((resolve, reject) => {
         worker.postMessage(mod);
@@ skipping 15 matching lines @@
         byteView[i+2] === ascii('m')) {
       return i;
     }
   }
   return -1;
 }
 
 function TestIncompatibleDowngrade() {
   return createWasmModule()
     .then((mod) => {
-      var buffer = window.internals.serializeObject(mod);
+      var buffer = window.internals.serializeWithInlineWasm(mod);
       var byteView = new Uint8Array(buffer);
       // The serialized payload starts with some serialization header, followed
       // by the wasm wire bytes. Those should start with the characters
       // 'a' 's' 'm'.
       // Find the start of that sequence and invalidate the wire bytes by
       // clearing the first byte.
       var startOfWasmHeader = findStartOfWasmHeader(byteView);
       assert_greater_than(startOfWasmHeader, 0,
                           "The wire format should contain a wasm header.");
       byteView[startOfWasmHeader] = 0;
       // Also invalidate the serialized blob. That follows the wire bytes.
       // Start from the end and clear the first non-null byte.
       var invalidalidated = false;
       for (var i = byteView.length - 1; i >= startOfWasmHeader + 3; --i) {
         if (byteView[i] != 0) {
           byteView[i] = 0;
           invalidated = true;
           break;
         }
       }
       assert_true(invalidated,
                   "the serialized blob should contain some non-null bytes.");
 
-      var deserialized = window.internals.deserializeBuffer(byteView.buffer);
+      var deserialized = window.internals.deserializeBufferContainingWasm(byteView.buffer);
       assert_equals(deserialized, null);
     });
 }