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

chrome/browser/lifetime/application_lifetime.h

Index: chrome/browser/lifetime/application_lifetime.h
diff --git a/chrome/browser/lifetime/application_lifetime.h b/chrome/browser/lifetime/application_lifetime.h
index 2f25219b0237025fdb7c5166b6c7b7090b6a5881..bdda4c1bbbfdd99889ef0e4794c90e26bf84179e 100644
--- a/chrome/browser/lifetime/application_lifetime.h
+++ b/chrome/browser/lifetime/application_lifetime.h
@@ -53,6 +53,9 @@ void AttemptExit();
 void ExitCleanly();
 #endif
 
+// Closes all browsers and if successful, quits.
+void CloseAllBrowsersAndQuit();
+
 // Closes all browsers. If the session is ending the windows are closed
 // directly. Otherwise the windows are closed by way of posting a WM_CLOSE
 // message.