fix: menu bar visibility when exiting full screen (#38681)

* fix:visibility of menu bar when exiting full screen

Co-authored-by: wugaosheng <wugaosheng@kylinos.cn>

* format code

Co-authored-by: wugaosheng <wugaosheng@kylinos.cn>

* format code

Co-authored-by: wugaosheng <wugaosheng@kylinos.cn>

* Modify comments

Co-authored-by: wugaosheng <wugaosheng@kylinos.cn>

* add menu bar visibility test

Co-authored-by: wugaosheng <wugaosheng@kylinos.cn>

* format code

Co-authored-by: wugaosheng <wugaosheng@kylinos.cn>

* change code

Co-authored-by: wugaosheng <wugaosheng@kylinos.cn>

* platform related in test

Co-authored-by: wugaosheng <wugaosheng@kylinos.cn>

* Update api-browser-window-spec.ts

* Update api-browser-window-spec.ts

---------

Co-authored-by: trop[bot] <37223003+trop[bot]@users.noreply.github.com>
Co-authored-by: wugaosheng <wugaosheng@kylinos.cn>
Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com>

shell/browser/native_window_views.cc

@@ -730,10 +730,14 @@ void NativeWindowViews::SetFullScreen(bool fullscreen) {
                                             gfx::Rect());
 
   // Auto-hide menubar when in fullscreen.
-  if (fullscreen)
+  if (fullscreen) {
+    menu_bar_visible_before_fullscreen_ = IsMenuBarVisible();
     SetMenuBarVisibility(false);
-  else
-    SetMenuBarVisibility(!IsMenuBarAutoHide());
+  } else {
+    SetMenuBarVisibility(!IsMenuBarAutoHide() &&
+                         menu_bar_visible_before_fullscreen_);
+    menu_bar_visible_before_fullscreen_ = false;
+  }
 #endif
 }
 

shell/browser/native_window_views.h

@@ -320,6 +320,9 @@ class NativeWindowViews : public NativeWindow,
   // Handles unhandled keyboard messages coming back from the renderer process.
   views::UnhandledKeyboardEventHandler keyboard_event_handler_;
 
+  // Whether the menubar is visible before the window enters fullscreen
+  bool menu_bar_visible_before_fullscreen_ = false;
+
   // Whether the window should be enabled based on user calls to SetEnabled()
   bool is_enabled_ = true;
   // How many modal children this window has;