If force-sign-in policy is enabled, popup warning dialog before window closing if auth token becom…

chrome/browser/ui/BUILD.gn

Index: chrome/browser/ui/BUILD.gn
diff --git a/chrome/browser/ui/BUILD.gn b/chrome/browser/ui/BUILD.gn
index 6cb06ec1a12715a1a4bf2c5b4728ed105e9169bf..848a488a89da4dbf17e14da55e4a2683b46c2582 100644
--- a/chrome/browser/ui/BUILD.gn
+++ b/chrome/browser/ui/BUILD.gn
@@ -1957,6 +1957,16 @@ split_static_library("ui") {
         ]
       }
     }
+
+    if (!is_chromeos) {
+      sources += [
+        "views/profiles/force_signout_dialog.cc",
+        "views/profiles/force_signout_dialog.h",
+        "views/profiles/force_signout_dialog_view.cc",
+        "views/profiles/force_signout_dialog_view.h",
+      ]
+    }
+
     if (use_ash) {
       sources += [
         "views/frame/browser_frame_ash.cc",