Upstream Chrome on iOS source code [1/11].

ios/chrome/browser/crash_report/crash_restore_helper.h

+// Copyright 2011 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 IOS_CHROME_BROWSER_CRASH_REPORT_CRASH_RESTORE_HELPER_H_
+#define IOS_CHROME_BROWSER_CRASH_REPORT_CRASH_RESTORE_HELPER_H_
+
+#import <Foundation/Foundation.h>
+
+namespace ios {
+class ChromeBrowserState;
+}
+
+@class TabModel;
+
+// Helper class for handling session restoration after a crash.
+@interface CrashRestoreHelper : NSObject
+
+- (id)initWithBrowserState:(ios::ChromeBrowserState*)browserState;
+
+// Saves the session information stored on disk in temporary files and will
+// then delete those from their default location. This will ensure that the
+// user will then start from scratch, while allowing restoring their old
+// sessions.
+- (void)moveAsideSessionInformation;
+
+// Shows an infobar on the currently selected tab of the given |tabModel|. This
+// infobar lets the user restore its session after a crash.
+- (void)showRestoreIfNeeded:(TabModel*)tabModel;
+
+@end
+
+#endif  // IOS_CHROME_BROWSER_CRASH_REPORT_CRASH_RESTORE_HELPER_H_