Ensure that when we are entering Immersive Fullscreen, the fullscreen window redraws the new layout…

chrome/browser/ui/cocoa/browser_window_controller_private.mm

Index: chrome/browser/ui/cocoa/browser_window_controller_private.mm
diff --git a/chrome/browser/ui/cocoa/browser_window_controller_private.mm b/chrome/browser/ui/cocoa/browser_window_controller_private.mm
index 58281ea47ef98c806e102692498e67021a0319d8..460f9c44651e45c30ec1e1814ff75c12a2059dcf 100644
--- a/chrome/browser/ui/cocoa/browser_window_controller_private.mm
+++ b/chrome/browser/ui/cocoa/browser_window_controller_private.mm
@@ -538,6 +538,8 @@ willPositionSheet:(NSWindow*)sheet
   fullscreen_mac::SlidingStyle style = fullscreen_mac::OMNIBOX_TABS_HIDDEN;
   [self adjustUIForSlidingFullscreenStyle:style];
 
+  [fullscreenWindow_ display];
+
   // AppKit is helpful and prevents NSWindows from having the same height as
   // the screen while the menu bar is showing. This only applies to windows on
   // a secondary screen, in a separate space. Calling [NSWindow