chrome: change ProfileErrorType enum into an enum class

chrome/browser/ui/profile_error_dialog.h

Index: chrome/browser/ui/profile_error_dialog.h
diff --git a/chrome/browser/ui/profile_error_dialog.h b/chrome/browser/ui/profile_error_dialog.h
index a3d325fa5e24e82a41035abab1517357a538e746..f78dfcbb40ef5965e1fdcf8bdea4acd136e9aa36 100644
--- a/chrome/browser/ui/profile_error_dialog.h
+++ b/chrome/browser/ui/profile_error_dialog.h
@@ -13,16 +13,16 @@
 // 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
+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