Ensure Windows fullscreen styling includes visibility

Fixes exiting fullscreen when windows are created fullscreen.
(e.g. Extension JS API: chrome.windows.create({state: 'fullscreen'}))

Windows created fullscreen have GWL_STYLE without WS_VISIBLE.
Ensure the style includes visibility to fix window breakage.

Fixed: 1062251
Change-Id: Ib4da7123781a6f591db04a696f48d4ba9c96d5df
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4778723
Commit-Queue: Peter Kasting <pkasting@chromium.org>
Auto-Submit: Mike Wasserman <msw@chromium.org>
Reviewed-by: Peter Kasting <pkasting@chromium.org>
Commit-Queue: Mike Wasserman <msw@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1183446}

ui/views/win/fullscreen_handler.cc

@@ -107,9 +107,10 @@ void FullscreenHandler::ProcessFullscreen(bool fullscreen,
                  SWP_NOZORDER | SWP_NOACTIVATE | SWP_FRAMECHANGED);
   } else {
     // Restore the window style and bounds saved prior to entering fullscreen.
+    // Use WS_VISIBLE for windows shown after SetFullscreen: crbug.com/1062251.
     // Making multiple window adjustments here is ugly, but if SetWindowPos()
     // doesn't redraw, the taskbar won't be repainted.
-    SetWindowLong(hwnd_, GWL_STYLE, saved_window_info_.style);
+    SetWindowLong(hwnd_, GWL_STYLE, saved_window_info_.style | WS_VISIBLE);
     SetWindowLong(hwnd_, GWL_EXSTYLE, saved_window_info_.ex_style);
 
     gfx::Rect window_rect(saved_window_info_.rect);