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

chrome/browser/app_controller_mac.mm

Index: chrome/browser/app_controller_mac.mm
diff --git a/chrome/browser/app_controller_mac.mm b/chrome/browser/app_controller_mac.mm
index 34736e6251be73809fade4cc03caf67b8cdb177b..f2832dd5b669a6bf7027fc59c1c1d762118355f0 100644
--- a/chrome/browser/app_controller_mac.mm
+++ b/chrome/browser/app_controller_mac.mm
@@ -359,15 +359,12 @@ class AppControllerProfileObserver : public ProfileInfoCacheObserver {
 
   size_t num_browsers = chrome::GetTotalBrowserCount();
 
-  // Initiate a shutdown (via chrome::CloseAllBrowsers()) if we aren't
-  // already shutting down.
-  if (!browser_shutdown::IsTryingToQuit()) {
-    content::NotificationService::current()->Notify(
-        chrome::NOTIFICATION_CLOSE_ALL_BROWSERS_REQUEST,
-        content::NotificationService::AllSources(),
-        content::NotificationService::NoDetails());
-    chrome::CloseAllBrowsers();
-  }
+  // Initiate a shutdown (via chrome::CloseAllBrowsersAndQuit()).
+  content::NotificationService::current()->Notify(
+      chrome::NOTIFICATION_CLOSE_ALL_BROWSERS_REQUEST,
+      content::NotificationService::AllSources(),
+      content::NotificationService::NoDetails());
+  chrome::CloseAllBrowsersAndQuit();
 
   return num_browsers == 0 ? YES : NO;
 }