chrome: change ProfileErrorType enum into an enum class

chrome/browser/ui/profile_error_dialog.h

 // Copyright (c) 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 CHROME_BROWSER_UI_PROFILE_ERROR_DIALOG_H_
 #define CHROME_BROWSER_UI_PROFILE_ERROR_DIALOG_H_
 
 #include <string>
 
 // Be very careful while modifying this enum. Do NOT remove any elements from
-// this enum. If you need to add one, add them to the end, right before
-// PROFILE_ERROR_END. PROFILE_ERROR_END should ALWAYS be the last element in
-// this enum. This is important because this enum is used to back a histogram,
-// and these are implicit assumptions made in terms of how enumerated
-// histograms are defined.
-enum ProfileErrorType {
-  PROFILE_ERROR_HISTORY,
-  PROFILE_ERROR_PREFERENCES,
-  PROFILE_ERROR_DB_AUTOFILL_WEB_DATA,
-  PROFILE_ERROR_DB_TOKEN_WEB_DATA,
-  PROFILE_ERROR_DB_WEB_DATA,
-  PROFILE_ERROR_DB_KEYWORD_WEB_DATA,
-  PROFILE_ERROR_CREATE_FAILURE_SPECIFIED,
-  PROFILE_ERROR_CREATE_FAILURE_ALL,
-  PROFILE_ERROR_END
+// this enum. If you need to add one, add them to the end, right before END.
+// END should ALWAYS be the last element in this enum. This is important because
+// this enum is used to back a histogram, and these are implicit assumptions
+// made in terms of how enumerated histograms are defined.
+enum class ProfileErrorType {
+  HISTORY,
+  PREFERENCES,
+  DB_AUTOFILL_WEB_DATA,
+  DB_TOKEN_WEB_DATA,
+  DB_WEB_DATA,
+  DB_KEYWORD_WEB_DATA,
+  CREATE_FAILURE_SPECIFIED,
+  CREATE_FAILURE_ALL,
+  END
 };
 
 // Shows an error dialog corresponding to the inability to open some portion of
 // the profile.
 // The ProfileErrorType |type| needs to correspond to one of the profile error
 // types in the enum above. If your use case doesn't fit any of the ones listed
 // above, please add your type to the enum and modify the enum definition in
 // tools/metrics/histograms/histograms.xml accordingly.
 // |message_id| is a string id corresponding to the message to show.
 // |diagnostics| contains diagnostic information about the database file that
 // might have caused a profile error.
 void ShowProfileErrorDialog(ProfileErrorType type,
                             int message_id,
                             const std::string& diagnostics);
 
 #endif  // CHROME_BROWSER_UI_PROFILE_ERROR_DIALOG_H_