[MacViews] Update AppWindow when the native window changes fullscreen state.

chrome/browser/ui/cocoa/apps/native_app_window_cocoa.mm

Index: chrome/browser/ui/cocoa/apps/native_app_window_cocoa.mm
diff --git a/chrome/browser/ui/cocoa/apps/native_app_window_cocoa.mm b/chrome/browser/ui/cocoa/apps/native_app_window_cocoa.mm
index 080cfce9defe6b13704eeb85e69290724e7c235f..a8130c75a5a6a8be6a69cabb1843e7a434b0eb14 100644
--- a/chrome/browser/ui/cocoa/apps/native_app_window_cocoa.mm
+++ b/chrome/browser/ui/cocoa/apps/native_app_window_cocoa.mm
@@ -763,10 +763,7 @@ void NativeAppWindowCocoa::WindowDidDeminiaturize() {
 }
 
 void NativeAppWindowCocoa::WindowDidEnterFullscreen() {
-  if (!is_fullscreen_) {
-    is_fullscreen_ = true;
-    app_window_->OSFullscreen();
-  }
+  is_fullscreen_ = true;
   app_window_->OnNativeWindowChanged();
 }
 
@@ -775,7 +772,6 @@ void NativeAppWindowCocoa::WindowDidExitFullscreen() {
   if (!shows_fullscreen_controls_)
     gfx::SetNSWindowCanFullscreen(window(), false);
 
-  app_window_->Restore();
   app_window_->OnNativeWindowChanged();
 }