[wasm] Support wasm module structured cloning.

chrome/browser/wasm/wasm_serialization_browsertest.cc

+// 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.
+
+#include "base/command_line.h"
+#include "base/macros.h"
+#include "chrome/browser/devtools/device/adb/adb_device_provider.h"
+#include "chrome/browser/devtools/device/adb/mock_adb_server.h"
+#include "chrome/browser/devtools/device/devtools_android_bridge.h"
+#include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/tabs/tab_strip_model.h"
+#include "chrome/common/url_constants.h"
+#include "chrome/test/base/ui_test_utils.h"
+#include "chrome/test/base/web_ui_browser_test.h"
+#include "content/public/browser/navigation_details.h"
+#include "content/public/browser/web_contents.h"
+#include "content/public/common/content_switches.h"
+#include "content/public/test/browser_test_utils.h"
+#include "net/test/embedded_test_server/embedded_test_server.h"
+
+using content::WebContents;
+
+class WasmSerializationBrowserTest : public InProcessBrowserTest {
+ public:
+  WasmSerializationBrowserTest() {}
+  ~WasmSerializationBrowserTest() override {}
+
+  void SetUpCommandLine(base::CommandLine* command_line) override {
+    command_line->AppendSwitch(switches::kEnableWasm);
+    InProcessBrowserTest::SetUpCommandLine(command_line);
+  }
+
+  void SetUp() override {
+    embedded_test_server()->ServeFilesFromSourceDirectory("chrome/test/data");
+    embedded_test_server()->ServeFilesFromSourceDirectory("v8/test/mjsunit");
+
+    ASSERT_TRUE(embedded_test_server()->Start());
+
+    test_url_ = embedded_test_server()->GetURL("/wasm/wasm_tests.html");
+    InProcessBrowserTest::SetUp();
+  }
+
+  GURL test_url() const { return test_url_; }
+
+ private:
+  GURL test_url_;
+  DISALLOW_COPY_AND_ASSIGN(WasmSerializationBrowserTest);
+};
+
+IN_PROC_BROWSER_TEST_F(WasmSerializationBrowserTest, RoundtripTest) {
+  ASSERT_TRUE(embedded_test_server()->Started());
+  ui_test_utils::NavigateToURL(browser(), test_url());
+  content::WebContents* web_contents =
+      browser()->tab_strip_model()->GetActiveWebContents();
+  int result = 0;
+  EXPECT_TRUE(content::ExecuteScriptAndExtractInt(
+      web_contents->GetMainFrame(), "test_instantiateInWorker()", &result));
+  EXPECT_EQ(43, result);
+}