Have content/ create and destroy its own threads.

chrome/browser/ui/browser_list.cc

 // Copyright (c) 2011 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_list.h"
 
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/metrics/histogram.h"
 #include "build/build_config.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/browser_shutdown.h"
 #include "chrome/browser/download/download_service.h"
 #include "chrome/browser/metrics/thread_watcher.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/printing/background_printing_manager.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/pref_names.h"
 #include "content/browser/tab_contents/navigation_details.h"
+#include "content/public/browser/browser_shutdown.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/common/result_codes.h"
 
 #if defined(OS_MACOSX)
 #include "chrome/browser/chrome_browser_application_mac.h"
 #endif
 
 #if defined(OS_CHROMEOS)
@@ skipping 508 matching lines @@
 
   // 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);
   AttemptExitInternal();
 }
 #endif
 
-static void TimeLimitedSessionEnding() {
+// static
+void BrowserList::SessionEnding() {
+  // 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.
@@ skipping 13 matching lines @@
 
   BrowserList::CloseAllBrowsers();
 
   // Send out notification. This is used during testing so that the test harness
   // can properly shutdown before we exit.
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_SESSION_END,
       content::NotificationService::AllSources(),
       content::NotificationService::NoDetails());
 
-  // And shutdown.
-  browser_shutdown::Shutdown();
+  // This will end by terminating the process.
+  content::ImmediateShutdownAndExitProcess();
 }
 
 // static
-void BrowserList::SessionEnding() {
-  TimeLimitedSessionEnding();
-
-#if defined(OS_WIN)
-  // At this point the message loop is still running yet we've shut everything
-  // down. If any messages are processed we'll likely crash. Exit now.
-  ExitProcess(content::RESULT_CODE_NORMAL_EXIT);
-#elif defined(OS_POSIX) && !defined(OS_MACOSX)
-  _exit(content::RESULT_CODE_NORMAL_EXIT);
-#else
-  NOTIMPLEMENTED();
-#endif
-}
-
-// static
 bool BrowserList::HasBrowserWithProfile(Profile* profile) {
   return FindBrowserMatching(BrowserList::begin(),
                              BrowserList::end(),
                              profile,
                              Browser::FEATURE_NONE,
                              kMatchAny) != NULL;
 }
 
 // static
 int BrowserList::keep_alive_count_ = 0;
@@ skipping 242 matching lines @@
   // If no more TabContents from Browsers, check the BackgroundPrintingManager.
   while (bg_printing_iterator_ != GetBackgroundPrintingManager()->end()) {
     cur_ = *bg_printing_iterator_;
     CHECK(cur_);
     ++bg_printing_iterator_;
     return;
   }
   // Reached the end - no more TabContents.
   cur_ = NULL;
 }