Mac: don't restore explicitly closed windows.

chrome/browser/sessions/session_service.cc

Index: chrome/browser/sessions/session_service.cc
diff --git a/chrome/browser/sessions/session_service.cc b/chrome/browser/sessions/session_service.cc
index 6b9bd65936a0d9eb421a36e52f2d627a4a19625e..8b2575d75d98b820d51f1ec830d272a3aefff03d 100644
--- a/chrome/browser/sessions/session_service.cc
+++ b/chrome/browser/sessions/session_service.cc
@@ -238,7 +238,7 @@ void SessionService::WindowClosing(const SessionID& window_id) {
     // false to true, so only update it if already true.
     has_open_trackable_browsers_ = HasOpenTrackableBrowsers(window_id);
   }
-  if (!has_open_trackable_browsers_)
+  if (should_record_close_as_pending())
     pending_window_close_ids_.insert(window_id.id());
   else
     window_closing_ids_.insert(window_id.id());
@@ -257,7 +257,7 @@ void SessionService::WindowClosed(const SessionID& window_id) {
              pending_window_close_ids_.end()) {
     // We'll hit this if user closed the last tab in a window.
     has_open_trackable_browsers_ = HasOpenTrackableBrowsers(window_id);
-    if (!has_open_trackable_browsers_)
+    if (should_record_close_as_pending())
       pending_window_close_ids_.insert(window_id.id());
     else
       ScheduleCommand(CreateWindowClosedCommand(window_id.id()));