Leave apps running on Windows and Linux when quitting Chrome from the wrench menu.

chrome/browser/lifetime/application_lifetime.cc

Index: chrome/browser/lifetime/application_lifetime.cc
diff --git a/chrome/browser/lifetime/application_lifetime.cc b/chrome/browser/lifetime/application_lifetime.cc
index 0693c58f08a7e48398ecbaeee2248f5ba129c73d..9aaa818ef19cb77bfd058d080c4359b6a4c6963a 100644
--- a/chrome/browser/lifetime/application_lifetime.cc
+++ b/chrome/browser/lifetime/application_lifetime.cc
@@ -86,20 +86,36 @@ void MarkAsCleanShutdown() {
     it->profile()->SetExitType(Profile::EXIT_NORMAL);
 }
 
-void AttemptExitInternal() {
+void AttemptExitInternal(bool try_to_quit_application) {
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_CLOSE_ALL_BROWSERS_REQUEST,
       content::NotificationService::AllSources(),
       content::NotificationService::NoDetails());
 
+  // On Mac, the platform-specific part handles setting this.
+#if !defined(OS_MACOSX)

[sky, 2013/10/22 15:41:18]

Is there a reason you set trying to quit after sending the notification? Seems
like it would make more sense to set it first so that anyone listening to the
notification could see we want to quit.

[Sam McNally, 2013/10/22 22:58:29]

Done.

+  if (try_to_quit_application) {

[sky, 2013/10/22 15:41:18]

nit: no {}

[Sam McNally, 2013/10/22 22:58:29]

Done.

+    browser_shutdown::SetTryingToQuit(true);
+  }
+#endif
+
   g_browser_process->platform_part()->AttemptExit();
 }
 
+void CloseAllBrowsersAndQuit() {
+  browser_shutdown::SetTryingToQuit(true);
+  CloseAllBrowsers();
+}
+
 void CloseAllBrowsers() {
-  // If there are no browsers, send the APP_TERMINATING action here. Otherwise,
-  // it will be sent by RemoveBrowser() when the last browser has closed.
+  // 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.
   if (browser_shutdown::ShuttingDownWithoutClosingBrowsers() ||
-      chrome::GetTotalBrowserCount() == 0) {
+      (chrome::GetTotalBrowserCount() == 0 &&
+       (browser_shutdown::IsTryingToQuit() || !chrome::WillKeepAlive() ||
+        CommandLine::ForCurrentProcess()->HasSwitch(
+            switches::kDisableBatchedShutdown)))) {
     // Tell everyone that we are shutting down.
     browser_shutdown::SetTryingToQuit(true);
 
@@ -153,7 +169,7 @@ void AttemptUserExit() {
   // request.
   PrefService* pref_service = g_browser_process->local_state();
   pref_service->SetBoolean(prefs::kRestartLastSessionOnShutdown, false);
-  AttemptExitInternal();
+  AttemptExitInternal(false);
 #endif
 }
 
@@ -212,7 +228,7 @@ void AttemptExit() {
   if (AreAllBrowsersCloseable())
     MarkAsCleanShutdown();
 #endif
-  AttemptExitInternal();
+  AttemptExitInternal(true);
 }
 
 #if defined(OS_CHROMEOS)
@@ -227,7 +243,7 @@ void ExitCleanly() {
   // screen locker.
   if (!AreAllBrowsersCloseable())
     browser_shutdown::OnShutdownStarting(browser_shutdown::END_SESSION);
-  AttemptExitInternal();
+  AttemptExitInternal(true);
 }
 #endif