Split the desktop portion of application_lifetime.cc into its own file.

chrome/browser/lifetime/application_lifetime_desktop.cc

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Copyright 2015 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/lifetime/application_lifetime.h"
+#include "chrome/browser/lifetime/application_lifetime_desktop.h"
 
-#include "base/bind.h"
-#include "base/command_line.h"
 #include "base/logging.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/prefs/pref_service.h"
 #include "base/process/process.h"
 #include "base/process/process_handle.h"
 #include "base/trace_event/trace_event.h"
-#include "build/build_config.h"
 #include "chrome/browser/browser_process.h"
-#include "chrome/browser/browser_process_platform_part.h"
 #include "chrome/browser/browser_shutdown.h"
-#include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/download/download_service.h"
+#include "chrome/browser/lifetime/application_lifetime.h"
+#include "chrome/browser/lifetime/application_lifetime_internal.h"
 #include "chrome/browser/lifetime/browser_close_manager.h"
 #include "chrome/browser/metrics/thread_watcher.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/browser_iterator.h"
-#include "chrome/browser/ui/browser_tabstrip.h"
 #include "chrome/browser/ui/browser_window.h"
-#include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/browser/ui/user_manager.h"
 #include "chrome/common/chrome_constants.h"
-#include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
-#include "components/tracing/tracing_switches.h"
-#include "content/public/browser/browser_thread.h"
-#include "content/public/browser/navigation_details.h"
-#include "content/public/browser/notification_service.h"
 
 #if defined(OS_CHROMEOS)
+#include "base/bind.h"
 #include "base/sys_info.h"
 #include "chrome/browser/chromeos/boot_times_recorder.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "chromeos/dbus/session_manager_client.h"
 #include "chromeos/dbus/update_engine_client.h"
+#include "content/public/browser/browser_thread.h"
 #endif
 
 #if defined(OS_WIN)
+#include "ash/shell.h"
 #include "base/win/win_util.h"
-#include "components/browser_watcher/exit_funnel_win.h"
-#endif
-
-#if defined(USE_ASH)
-#include "ash/shell.h"
 #endif
 
 namespace chrome {
+
 namespace {
 
-#if !defined(OS_ANDROID)
 // Returns true if all browsers can be closed without user interaction.
 // This currently checks if there is pending download, or if it needs to
 // handle unload handler.
 bool AreAllBrowsersCloseable() {
   chrome::BrowserIterator browser_it;
   if (browser_it.done())
     return true;
 
   // If there are any downloads active, all browsers are not closeable.
   // However, this does not block for malicious downloads.
   if (DownloadService::NonMaliciousDownloadCountAllProfiles() > 0)
     return false;
 
   // Check TabsNeedBeforeUnloadFired().
   for (; !browser_it.done(); browser_it.Next()) {
     if (browser_it->TabsNeedBeforeUnloadFired())
       return false;
   }
   return true;
 }
-#endif  // !defined(OS_ANDROID)
 
 int g_keep_alive_count = 0;
 bool g_disable_shutdown_for_testing = false;
 
 #if defined(OS_CHROMEOS)
 // Whether chrome should send stop request to a session manager.
 bool g_send_stop_request_to_session_manager = false;
 #endif
 
-}  // namespace
-
 void MarkAsCleanShutdown() {
   // TODO(beng): Can this use ProfileManager::GetLoadedProfiles() instead?
   for (chrome::BrowserIterator it; !it.done(); it.Next())
     it->profile()->SetExitType(Profile::EXIT_NORMAL);
 }
 
-void AttemptExitInternal(bool try_to_quit_application) {
-  // On Mac, the platform-specific part handles setting this.
-#if !defined(OS_MACOSX)
-  if (try_to_quit_application)
-    browser_shutdown::SetTryingToQuit(true);
+void CloseAllBrowsersIfNeeded() {
+  // If there are no browsers open and we aren't already shutting down,
+  // initiate a shutdown. Also skips shutdown if this is a unit test.
+  // (MessageLoop::current() == null or explicitly disabled).
+  if (chrome::GetTotalBrowserCount() == 0 &&
+      !browser_shutdown::IsTryingToQuit() && base::MessageLoop::current() &&
+      !g_disable_shutdown_for_testing) {
+    CloseAllBrowsers();
+  }
+}
+
+}  // namespace
+
+namespace internal {
+
+#if defined(OS_CHROMEOS)
+void NotifyAndTerminateInternalCrOS() {
+  if (base::SysInfo::IsRunningOnChromeOS()) {
+    // If we're on a ChromeOS device, reboot if an update has been applied,
+    // or else signal the session manager to log out.
+    chromeos::UpdateEngineClient* update_engine_client
+        = chromeos::DBusThreadManager::Get()->GetUpdateEngineClient();
+    if (update_engine_client->GetLastStatus().status ==
+        chromeos::UpdateEngineClient::UPDATE_STATUS_UPDATED_NEED_REBOOT) {
+      update_engine_client->RebootAfterUpdate();
+    } else if (g_send_stop_request_to_session_manager) {
+      // Don't ask SessionManager to stop session if the shutdown request comes
+      // from session manager.
+      chromeos::DBusThreadManager::Get()->GetSessionManagerClient()
+          ->StopSession();
+    }
+  } else {
+    if (g_send_stop_request_to_session_manager) {
+      // If running the Chrome OS build, but we're not on the device, act
+      // as if we received signal from SessionManager.
+      content::BrowserThread::PostTask(content::BrowserThread::UI, FROM_HERE,
+                                       base::Bind(&ExitCleanly));
+    }
+  }
+}
+#else
+void AttemptExitInternalDesktop() {
+  if (AreAllBrowsersCloseable())
+    MarkAsCleanShutdown();
+}
 #endif
 
-  content::NotificationService::current()->Notify(
-      chrome::NOTIFICATION_CLOSE_ALL_BROWSERS_REQUEST,
-      content::NotificationService::AllSources(),
-      content::NotificationService::NoDetails());
-
-  g_browser_process->platform_part()->AttemptExit();
-}
+}  // namespace internal
 
 void CloseAllBrowsersAndQuit() {
   browser_shutdown::SetTryingToQuit(true);
   CloseAllBrowsers();
 }
 
 void CloseAllBrowsers() {
   // If there are no browsers and closing the last browser would quit the
   // application, send the APP_TERMINATING action here. Otherwise, it will be
   // sent by RemoveBrowser() when the last browser has closed.
@@ skipping 46 matching lines @@
   g_send_stop_request_to_session_manager = true;
   // On ChromeOS, always terminate the browser, regardless of the result of
   // AreAllBrowsersCloseable(). See crbug.com/123107.
   chrome::NotifyAndTerminate(true);
 #else
   // Reset the restart bit that might have been set in cancelled restart
   // request.
   UserManager::Hide();
   PrefService* pref_service = g_browser_process->local_state();
   pref_service->SetBoolean(prefs::kRestartLastSessionOnShutdown, false);
-  AttemptExitInternal(false);
-#endif
-}
-
-void StartShutdownTracing() {
-  const base::CommandLine& command_line =
-      *base::CommandLine::ForCurrentProcess();
-  if (command_line.HasSwitch(switches::kTraceShutdown)) {
-    base::trace_event::TraceConfig trace_config(
-        command_line.GetSwitchValueASCII(switches::kTraceShutdown), "");
-    base::trace_event::TraceLog::GetInstance()->SetEnabled(
-        trace_config,
-        base::trace_event::TraceLog::RECORDING_MODE);
-  }
-  TRACE_EVENT0("shutdown", "StartShutdownTracing");
+  internal::AttemptExitInternal(false);
+#endif  // defined(OS_CHROMEOS)
 }
 
 // The Android implementation is in application_lifetime_android.cc
-#if !defined(OS_ANDROID)
 void AttemptRestart() {
   // TODO(beng): Can this use ProfileManager::GetLoadedProfiles instead?
   for (chrome::BrowserIterator it; !it.done(); it.Next())
     content::BrowserContext::SaveSessionState(it->profile());
 
   PrefService* pref_service = g_browser_process->local_state();
   pref_service->SetBoolean(prefs::kWasRestarted, true);
 
 #if defined(OS_CHROMEOS)
   chromeos::BootTimesRecorder::Get()->set_restart_requested();
 
   DCHECK(!g_send_stop_request_to_session_manager);
   // Make sure we don't send stop request to the session manager.
   g_send_stop_request_to_session_manager = false;
   // Run exit process in clean stack.
   content::BrowserThread::PostTask(content::BrowserThread::UI, FROM_HERE,
                                    base::Bind(&ExitCleanly));
 #else
   // Set the flag to restore state after the restart.
   pref_service->SetBoolean(prefs::kRestartLastSessionOnShutdown, true);
   AttemptExit();
 #endif
 }
-#endif
-
-void AttemptExit() {
-#if defined(OS_CHROMEOS)
-  // On ChromeOS, user exit and system exits are the same.
-  AttemptUserExit();
-#else
-  // If we know that all browsers can be closed without blocking,
-  // don't notify users of crashes beyond this point.
-  // Note that MarkAsCleanShutdown() does not set UMA's exit cleanly bit
-  // so crashes during shutdown are still reported in UMA.
-#if !defined(OS_ANDROID)
-  // Android doesn't use Browser.
-  if (AreAllBrowsersCloseable())
-    MarkAsCleanShutdown();
-#endif
-  AttemptExitInternal(true);
-#endif
-}
 
 #if defined(OS_CHROMEOS)
 // A function called when SIGTERM is received.
 void ExitCleanly() {
   // We always mark exit cleanly.
   MarkAsCleanShutdown();
 
   // Don't block when SIGTERM is received. AreaAllBrowsersCloseable()
   // can be false in following cases. a) power-off b) signout from
   // screen locker.
   if (!AreAllBrowsersCloseable())
     browser_shutdown::OnShutdownStarting(browser_shutdown::END_SESSION);
   else
     browser_shutdown::OnShutdownStarting(browser_shutdown::BROWSER_EXIT);
-  AttemptExitInternal(true);
+  internal::AttemptExitInternal(true);
 }
 #endif
 
-void SessionEnding() {
-#if defined(OS_WIN)
-  browser_watcher::ExitFunnel funnel;
-
-  funnel.Init(kBrowserExitCodesRegistryPath, base::GetCurrentProcessHandle());
-  funnel.RecordEvent(L"SessionEnding");
-#endif
-  // This is a time-limited shutdown where we need to write as much to
-  // disk as we can as soon as we can, and where we must kill the
-  // process within a hang timeout to avoid user prompts.
-
-  // Start watching for hang during shutdown, and crash it if takes too long.
-  // We disarm when |shutdown_watcher| object is destroyed, which is when we
-  // exit this function.
-  ShutdownWatcherHelper shutdown_watcher;
-  shutdown_watcher.Arm(base::TimeDelta::FromSeconds(90));
-
-  // EndSession is invoked once per frame. Only do something the first time.
-  static bool already_ended = false;
-  // We may get called in the middle of shutdown, e.g. http://crbug.com/70852
-  // In this case, do nothing.
-  if (already_ended || !content::NotificationService::current())
-    return;
-  already_ended = true;
-
-  browser_shutdown::OnShutdownStarting(browser_shutdown::END_SESSION);
-
-  content::NotificationService::current()->Notify(
-      chrome::NOTIFICATION_CLOSE_ALL_BROWSERS_REQUEST,
-      content::NotificationService::AllSources(),
-      content::NotificationService::NoDetails());
-
-#if defined(OS_WIN)
-  funnel.RecordEvent(L"EndSession");
-#endif
-  // Write important data first.
-  g_browser_process->EndSession();
-
-#if defined(OS_WIN)
-  base::win::SetShouldCrashOnProcessDetach(false);
-#endif
-
-#if defined(OS_WIN)
-  // KillProcess ought to terminate the process without further ado, so if
-  // execution gets to this point, presumably this is normal exit.
-  funnel.RecordEvent(L"KillProcess");
-#endif
-
-  // On Windows 7 and later, the system will consider the process ripe for
-  // termination as soon as it hides or destroys its windows. Since any
-  // execution past that point will be non-deterministically cut short, we
-  // might as well put ourselves out of that misery deterministically.
-  base::Process::Current().Terminate(0, false);
-}
-
 void IncrementKeepAliveCount() {
   // Increment the browser process refcount as long as we're keeping the
   // application alive.
   if (!WillKeepAlive())
     g_browser_process->AddRefModule();
   ++g_keep_alive_count;
 }
 
-void CloseAllBrowsersIfNeeded() {
-  // If there are no browsers open and we aren't already shutting down,
-  // initiate a shutdown. Also skips shutdown if this is a unit test.
-  // (MessageLoop::current() == null or explicitly disabled).
-  if (chrome::GetTotalBrowserCount() == 0 &&
-      !browser_shutdown::IsTryingToQuit() && base::MessageLoop::current() &&
-      !g_disable_shutdown_for_testing) {
-    CloseAllBrowsers();
-  }
-}
-
 void DecrementKeepAliveCount() {
   DCHECK_GT(g_keep_alive_count, 0);
   --g_keep_alive_count;
   // Although we should have a browser process, if there is none,
   // there is nothing to do.
   if (!g_browser_process) return;
 
   // Allow the app to shutdown again.
   if (!WillKeepAlive()) {
     g_browser_process->ReleaseModule();
     CloseAllBrowsersIfNeeded();
   }
 }
 
 bool WillKeepAlive() {
   return g_keep_alive_count > 0;
 }
 
-void NotifyAppTerminating() {
-  static bool notified = false;
-  if (notified)
-    return;
-  notified = true;
-  content::NotificationService::current()->Notify(
-      chrome::NOTIFICATION_APP_TERMINATING,
-      content::NotificationService::AllSources(),
-      content::NotificationService::NoDetails());
-}
-
-void NotifyAndTerminate(bool fast_path) {
-#if defined(OS_CHROMEOS)
-  static bool notified = false;
-  // Return if a shutdown request has already been sent.
-  if (notified)
-    return;
-  notified = true;
-#endif
-
-  if (fast_path)
-    NotifyAppTerminating();
-
-#if defined(OS_CHROMEOS)
-  if (base::SysInfo::IsRunningOnChromeOS()) {
-    // If we're on a ChromeOS device, reboot if an update has been applied,
-    // or else signal the session manager to log out.
-    chromeos::UpdateEngineClient* update_engine_client
-        = chromeos::DBusThreadManager::Get()->GetUpdateEngineClient();
-    if (update_engine_client->GetLastStatus().status ==
-        chromeos::UpdateEngineClient::UPDATE_STATUS_UPDATED_NEED_REBOOT) {
-      update_engine_client->RebootAfterUpdate();
-    } else if (g_send_stop_request_to_session_manager) {
-      // Don't ask SessionManager to stop session if the shutdown request comes
-      // from session manager.
-      chromeos::DBusThreadManager::Get()->GetSessionManagerClient()
-          ->StopSession();
-    }
-  } else {
-    if (g_send_stop_request_to_session_manager) {
-      // If running the Chrome OS build, but we're not on the device, act
-      // as if we received signal from SessionManager.
-      content::BrowserThread::PostTask(content::BrowserThread::UI, FROM_HERE,
-                                       base::Bind(&ExitCleanly));
-    }
-  }
-#endif
-}
-
 void OnAppExiting() {
   static bool notified = false;
   if (notified)
     return;
   notified = true;
   HandleAppExitingForPlatform();
 }
 
 bool ShouldStartShutdown(Browser* browser) {
   if (BrowserList::GetInstance(browser->host_desktop_type())->size() > 1)
     return false;
 #if defined(OS_WIN)
   // On Windows 8 the desktop and ASH environments could be active
   // at the same time.
   // We should not start the shutdown process in the following cases:-
   // 1. If the desktop type of the browser going away is ASH and there
   //    are browser windows open in the desktop.
   // 2. If the desktop type of the browser going away is desktop and the ASH
   //    environment is still active.
   if (browser->host_desktop_type() == chrome::HOST_DESKTOP_TYPE_NATIVE)
     return !ash::Shell::HasInstance();
   else if (browser->host_desktop_type() == chrome::HOST_DESKTOP_TYPE_ASH)
     return BrowserList::GetInstance(chrome::HOST_DESKTOP_TYPE_NATIVE)->empty();
-#endif
+#endif  // defined(OS_WIN)
   return true;
 }
 
 void DisableShutdownForTesting(bool disable_shutdown_for_testing) {
   g_disable_shutdown_for_testing = disable_shutdown_for_testing;
   if (!g_disable_shutdown_for_testing && !WillKeepAlive())
     CloseAllBrowsersIfNeeded();
 }
 
 }  // namespace chrome