Closing a guest session clears all browsing history.

chrome/browser/ui/browser_command_controller_browsertest.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 "chrome/browser/ui/browser_command_controller.h"
 
+#include "base/command_line.h"
 #include "chrome/app/chrome_command_ids.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/chrome_notification_types.h"
+#include "chrome/browser/profiles/profile_manager.h"
+#include "chrome/browser/profiles/profile_window.h"
+#include "chrome/browser/search_engines/template_url_service_factory.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_commands.h"
+#include "chrome/browser/ui/browser_finder.h"
+#include "chrome/browser/ui/browser_list.h"
+#include "chrome/browser/ui/browser_window.h"
+#include "chrome/browser/ui/startup/startup_browser_creator.h"
 #include "chrome/browser/ui/tab_modal_confirm_dialog_browsertest.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/test/base/in_process_browser_test.h"
+#include "components/search_engines/template_url_service.h"
+#include "components/signin/core/common/profile_management_switches.h"
+#include "components/signin/core/common/profile_management_switches.h"
+#include "content/public/browser/notification_service.h"
 #include "content/public/test/test_utils.h"
 
 typedef InProcessBrowserTest BrowserCommandControllerBrowserTest;
 
 // Verify that showing a constrained window disables find.
 IN_PROC_BROWSER_TEST_F(BrowserCommandControllerBrowserTest, DisableFind) {
   EXPECT_TRUE(chrome::IsCommandEnabled(browser(), IDC_FIND));
 
   // Showing constrained window should disable find.
   content::WebContents* web_contents =
       browser()->tab_strip_model()->GetActiveWebContents();
   MockTabModalConfirmDialogDelegate* delegate =
       new MockTabModalConfirmDialogDelegate(web_contents, NULL);
   TabModalConfirmDialog::Create(delegate, web_contents);
   EXPECT_FALSE(chrome::IsCommandEnabled(browser(), IDC_FIND));
 
   // Switching to a new (unblocked) tab should reenable it.
   AddBlankTabAndShow(browser());
   EXPECT_TRUE(chrome::IsCommandEnabled(browser(), IDC_FIND));
 
   // Switching back to the blocked tab should disable it again.
   browser()->tab_strip_model()->ActivateTabAt(0, false);
   EXPECT_FALSE(chrome::IsCommandEnabled(browser(), IDC_FIND));
 
   // Closing the constrained window should reenable it.
   delegate->Cancel();
   content::RunAllPendingInMessageLoop();
   EXPECT_TRUE(chrome::IsCommandEnabled(browser(), IDC_FIND));
 }
+
+// This test also tests the BrowsingDataRemover that fires when all of a guest's

[Peter Kasting, 2015/02/12 22:18:40]

What about that BrowsingDataRemover does this test, since there's no visible
such test code?

[Mike Lerman, 2015/02/13 14:07:29]

I tried rephrasing my comment here. I'm referencing the change introduced in
this CL within browser.cc, where ~Browser() can create and execute a
BrowsingDataRemover.

+// browsers are closed, in ~Browser().
+IN_PROC_BROWSER_TEST_F(BrowserCommandControllerBrowserTest,
+                       NewAvatarMenuEnabledInGuestMode) {
+  switches::EnableNewAvatarMenuForTesting(
+      base::CommandLine::ForCurrentProcess());
+
+  EXPECT_EQ(1U, BrowserList::GetInstance(chrome::GetActiveDesktop())->size());
+
+  // Create a guest browser nicely. Using CreateProfile() and CreateBrowser()
+  // does incomplete initialization that would lead to
+  // SystemUrlRequestContextGetter being leaked.
+  scoped_ptr<content::WindowedNotificationObserver> browser_creation_observer;

[battre, 2015/02/13 08:49:43]

opt/nit: you could also create this on the stack.

[Mike Lerman, 2015/02/13 14:07:29]

Done.

+  browser_creation_observer.reset(new content::WindowedNotificationObserver(
+        chrome::NOTIFICATION_BROWSER_WINDOW_READY,

[Peter Kasting, 2015/02/12 22:18:40]

Nit: Indent 4, not 6

[Mike Lerman, 2015/02/13 14:07:29]

Done.

+        content::NotificationService::AllSources()));
+  profiles::SwitchToGuestProfile(chrome::GetActiveDesktop(),
+                                 ProfileManager::CreateCallback());
+
+  // RunUntilIdle() (racily) isn't sufficient to ensure browser creation, so
+  // listen for the notification.
+  base::MessageLoop::current()->RunUntilIdle();
+  browser_creation_observer->Wait();
+  EXPECT_EQ(2U, BrowserList::GetInstance(chrome::GetActiveDesktop())->size());
+
+  // Access the browser that was created for the new Guest Profile.
+  Profile* guest = g_browser_process->profile_manager()->GetProfileByPath(
+      ProfileManager::GetGuestProfilePath());
+  Browser* browser = chrome::FindAnyBrowser(
+      guest, true, chrome::GetActiveDesktop());
+  EXPECT_TRUE(browser);
+
+  // The BrowsingDataRemover needs a loaded TemplateUrlService or else it hangs
+  // on to a CallbackList::Subscription forever.
+  TemplateURLServiceFactory::GetForProfile(guest)->set_loaded(true);
+
+  chrome::BrowserCommandController* command_controller =
+       browser->command_controller();

[Peter Kasting, 2015/02/12 22:18:40]

Nit: Just inline this into the next line, pulling out into its own temp just
adds verbosity rather than clarity

[Mike Lerman, 2015/02/13 14:07:29]

Done.

+  const CommandUpdater* command_updater = command_controller->command_updater();
+  #if defined(OS_CHROMEOS)
+    // Chrome OS uses system tray menu to handle multi-profiles.
+    EXPECT_FALSE(command_updater->IsCommandEnabled(IDC_SHOW_AVATAR_MENU));
+  #else
+    EXPECT_TRUE(command_updater->IsCommandEnabled(IDC_SHOW_AVATAR_MENU));
+  #endif
+}