Message center re-organized

ui/message_center/message_center_tray.cc

Index: ui/message_center/message_center_tray.cc
diff --git a/ui/message_center/message_center_tray.cc b/ui/message_center/message_center_tray.cc
index 46438cc9d6c8e7f56b1e62aa08fceed8bda7afb4..2579dc55ffb8bb6e711db234cf7af102d70ae4bc 100644
--- a/ui/message_center/message_center_tray.cc
+++ b/ui/message_center/message_center_tray.cc
@@ -50,6 +50,13 @@ bool MessageCenterTray::HideMessageCenterBubble() {
   if (!message_center_visible_)
     return false;
   delegate_->HideMessageCenter();
+  SetMessageCenterHidden();
+  return true;
+}
+
+void MessageCenterTray::SetMessageCenterHidden() {
+  if (!message_center_visible_)
+    return;
   message_center_visible_ = false;
   message_center_->SetMessageCenterVisible(false);
   // Some notifications (like system ones) should appear as popups again
@@ -57,7 +64,6 @@ bool MessageCenterTray::HideMessageCenterBubble() {
   if (message_center_->HasPopupNotifications())
     ShowPopupBubble();
   NotifyMessageCenterTrayChanged();
-  return true;
 }
 
 void MessageCenterTray::ToggleMessageCenterBubble() {