Notify the global menu bar when window is mapped

atom/browser/native_window_views.cc

@@ -300,14 +300,29 @@ bool NativeWindowViews::IsFocused() {
 
 void NativeWindowViews::Show() {
   window_->native_widget_private()->ShowWithWindowState(GetRestoredState());
+
+#if defined(USE_X11)
+  if (global_menu_bar_)
+    global_menu_bar_->OnWindowMapped();
+#endif
 }
 
 void NativeWindowViews::ShowInactive() {
   window_->ShowInactive();
+
+#if defined(USE_X11)
+  if (global_menu_bar_)
+    global_menu_bar_->OnWindowMapped();
+#endif
 }
 
 void NativeWindowViews::Hide() {
   window_->Hide();
+
+#if defined(USE_X11)
+  if (global_menu_bar_)
+    global_menu_bar_->OnWindowUnmapped();
+#endif
 }
 
 bool NativeWindowViews::IsVisible() {

atom/browser/ui/views/global_menu_bar_x11.cc

@@ -210,6 +210,14 @@ void GlobalMenuBarX11::InitServer(gfx::AcceleratedWidget xid) {
   server_ = server_new(path.c_str());
 }
 
+void GlobalMenuBarX11::OnWindowMapped() {
+  GlobalMenuBarRegistrarX11::GetInstance()->OnWindowMapped(xid_);
+}
+
+void GlobalMenuBarX11::OnWindowUnmapped() {
+  GlobalMenuBarRegistrarX11::GetInstance()->OnWindowUnmapped(xid_);
+}
+
 void GlobalMenuBarX11::BuildMenuFromModel(ui::MenuModel* model,
                                           DbusmenuMenuitem* parent) {
   for (int i = 0; i < model->GetItemCount(); ++i) {

atom/browser/ui/views/global_menu_bar_x11.h

@@ -46,6 +46,10 @@ class GlobalMenuBarX11 {
   void SetMenu(ui::MenuModel* menu_model);
   bool IsServerStarted() const;
 
+  // Called by NativeWindow when it show/hides.
+  void OnWindowMapped();
+  void OnWindowUnmapped();
+
  private:
   // Creates a DbusmenuServer.
   void InitServer(gfx::AcceleratedWidget xid);