Add min and max to ExecutionMode enum.

components/chrome_cleaner/public/constants/constants.h

 // Copyright 2017 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_CHROME_CLEANER_PUBLIC_CONSTANTS_CONSTANTS_H_
 #define COMPONENTS_CHROME_CLEANER_PUBLIC_CONSTANTS_CONSTANTS_H_
 
 // Constants shared by the Chromium and the Chrome Cleanaup tool repos.
 
 namespace chrome_cleaner {
@@ skipping 96 matching lines @@
   // into Extended Safe Browsing Reporting.
   kScanning = 1,
   // The cleaner will run in cleanup mode only. No UI will be shown to the
   // user (UI handled by Chrome) and logs will only be uploaded if the user
   // opted into Extended Safe Browsing Reporting v2.
   kCleanup = 2,
   // The cleaner will run in post-reboot validation mode. No UI will be shown
   // to the user and logs will only be uploaded if the user opted into Extended
   // Safe Browsing Reporting v2.
   kPostRebootValidation = 3,
+
+  // Auxiliary enumerators for range checking.
+  kMin = kNone,
+  kMax = kPostRebootValidation,

[Joe Mason, 2017/04/24 14:36:15]

Can you use kNumValues (= kPostRebootValidation + 1) instead of kMax, so that it
will automatically be updated if more elements are added?

[ftirelo, 2017/04/24 15:16:12]

Done.

 };
 
 }  // namespace chrome_cleaner
 
 #endif  // COMPONENTS_CHROME_CLEANER_PUBLIC_CONSTANTS_CONSTANTS_H_