1 files changed, 36 insertions, 0 deletions
diff --git a/chromium/chrome/browser/signin/logout_tab_helper.h b/chromium/chrome/browser/signin/logout_tab_helper.h
new file mode 100644
index 00000000000..4f2974c4568
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+++ b/chromium/chrome/browser/signin/logout_tab_helper.h
@@ -0,0 +1,36 @@
+// Copyright 2020 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_SIGNIN_LOGOUT_TAB_HELPER_H_
+#define CHROME_BROWSER_SIGNIN_LOGOUT_TAB_HELPER_H_
+
+#include "content/public/browser/web_contents_observer.h"
+#include "content/public/browser/web_contents_user_data.h"
+
+// Tab helper used for logout tabs. Monitors if the logout tab loaded correctly
+// and fallbacks to local signout in case of failure.
+// Only the first navigation is monitored. Even though the logout page sometimes
+// redirects to the SAML provider through javascript, that second navigation is
+// not monitored. The logout is considered successful if the first navigation
+// succeeds, because the signout headers which cause the tokens to be revoked
+// are there.
+class LogoutTabHelper : public content::WebContentsUserData<LogoutTabHelper>,
+                        public content::WebContentsObserver {
+ public:
+  ~LogoutTabHelper() override;
+
+  LogoutTabHelper(const LogoutTabHelper&) = delete;
+  LogoutTabHelper& operator=(const LogoutTabHelper&) = delete;
+
+ private:
+  friend class content::WebContentsUserData<LogoutTabHelper>;
+  explicit LogoutTabHelper(content::WebContents* web_contents);
+
+  // content::WebContentsObserver:
+  void PrimaryPageChanged(content::Page& page) override;
+
+  WEB_CONTENTS_USER_DATA_KEY_DECL();
+};
+
+#endif  // CHROME_BROWSER_SIGNIN_LOGOUT_TAB_HELPER_H_