Add Browser::SkipCallBeforeUnload so that the browser windows can be closed regardless of beforeunl…

chrome/browser/signin/chrome_signin_client.cc

Index: chrome/browser/signin/chrome_signin_client.cc
diff --git a/chrome/browser/signin/chrome_signin_client.cc b/chrome/browser/signin/chrome_signin_client.cc
index 15c44ce177e892798d9c223b952594079ae2840d..3a30291d3fc6b45f83b40b55995f67af4c22ff94 100644
--- a/chrome/browser/signin/chrome_signin_client.cc
+++ b/chrome/browser/signin/chrome_signin_client.cc
@@ -280,10 +280,12 @@ void ChromeSigninClient::PreSignOut(const base::Callback<void()>& sign_out) {
   if (is_force_signin_enabled_ && !profile_->IsSystemProfile() &&
       !profile_->IsGuestSession() && !profile_->IsSupervised()) {
     BrowserList::CloseAllBrowsersWithProfile(
-        profile_, base::Bind(&ChromeSigninClient::OnCloseBrowsersSuccess,
-                             base::Unretained(this), sign_out),
+        profile_,
+        base::Bind(&ChromeSigninClient::OnCloseBrowsersSuccess,
+                   base::Unretained(this), sign_out),
         base::Bind(&ChromeSigninClient::OnCloseBrowsersAborted,
-                   base::Unretained(this)));
+                   base::Unretained(this)),
+        false);
   } else {
 #else
   {