Fix crash when incognito split mode extension using the WebRequest API was reloaded

chrome/browser/extensions/api/web_request/web_request_apitest.cc

 // Copyright (c) 2012 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 "chrome/browser/extensions/api/web_request/web_request_api.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_system.h"
 #include "chrome/browser/extensions/extension_test_message_listener.h"
@@ skipping 254 matching lines @@
 IN_PROC_BROWSER_TEST_F(ExtensionWebRequestApiTest, PostData2) {
   // Test HTML form POST data access with the multipart and plaintext encoding.
   ASSERT_TRUE(RunExtensionSubtest("webrequest", "test_post2.html")) <<
       message_;
 }
 
 IN_PROC_BROWSER_TEST_F(ExtensionWebRequestApiTest,
                        DeclarativeSendMessage) {
   ASSERT_TRUE(RunExtensionTest("webrequest_sendmessage")) << message_;
 }
+
+// Check that reloading an extension that runs in incognito split mode and
+// has two active background pages with registered events does not crash the
+// browser. Regression test for http://crbug.com/224094
+IN_PROC_BROWSER_TEST_F(ExtensionWebRequestApiTest, IncognitoSplitModeReload) {
+  // Wait for rules to be set up.
+  ExtensionTestMessageListener listener("done", true);
+  ExtensionTestMessageListener listener_incognito("done_incognito", true);
+
+  const extensions::Extension* extension = LoadExtensionWithFlags(
+      test_data_dir_.AppendASCII("webrequest_reload"),
+      kFlagEnableIncognito);
+  ASSERT_TRUE(extension);
+  ui_test_utils::OpenURLOffTheRecord(browser()->profile(), GURL("about:blank"));
+
+  EXPECT_TRUE(listener.WaitUntilSatisfied());
+  EXPECT_TRUE(listener_incognito.WaitUntilSatisfied());
+
+  // Reload extension and wait for rules to be set up again. This should not
+  // crash the browser.
+  ExtensionTestMessageListener listener2("done", true);
+  ExtensionTestMessageListener listener_incognito2("done_incognito", true);
+
+  ReloadExtension(extension->id());
+
+  EXPECT_TRUE(listener2.WaitUntilSatisfied());
+  EXPECT_TRUE(listener_incognito2.WaitUntilSatisfied());
+}