Delete the stability file on clean exit.

components/browser_watcher/stability_debugging_win.h

 // Copyright 2016 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 COMPONENTS_BROWSER_WATCHER_STABILITY_DEBUGGING_WIN_H_
 #define COMPONENTS_BROWSER_WATCHER_STABILITY_DEBUGGING_WIN_H_
 
 #include "base/files/file_path.h"
 #include "base/gtest_prod_util.h"
 #include "base/process/process.h"
 
 namespace browser_watcher {
 
 // Returns the the stability debugging directory.
 base::FilePath GetStabilityDir(const base::FilePath& user_data_dir);
 
 // On success, |path| contains the path to the stability debugging information
 // file for |process|.
 bool GetStabilityFileForProcess(const base::Process& process,
                                 const base::FilePath& user_data_dir,
                                 base::FilePath* path);
 
 // Returns a pattern that matches file names returned by GetFileForProcess.
 base::FilePath::StringType GetStabilityFilePattern();
 
+// Marks the stability file for deletion.
+void MarkStabilityFileForDeletion(const base::FilePath& user_data_dir);
+
 }  // namespace browser_watcher
 
 #endif  // COMPONENTS_BROWSER_WATCHER_STABILITY_DEBUGGING_WIN_H_