CREDENTIAL: Disable auto sign-in by default for existing credentials.

components/password_manager/core/browser/login_database.cc

 // Copyright 2014 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.
 
 #include "components/password_manager/core/browser/login_database.h"
 
 #include <stddef.h>
 #include <stdint.h>
 #include <algorithm>
 #include <limits>
@@ skipping 21 matching lines @@
 #include "sql/statement.h"
 #include "sql/transaction.h"
 #include "url/origin.h"
 #include "url/url_constants.h"
 
 using autofill::PasswordForm;
 
 namespace password_manager {
 
 // The current version number of the login database schema.
-const int kCurrentVersionNumber = 16;
+const int kCurrentVersionNumber = 17;
 // The oldest version of the schema such that a legacy Chrome client using that
 // version can still read/write the current database.
 const int kCompatibleVersionNumber = 14;
 
 base::Pickle SerializeVector(const std::vector<base::string16>& vec) {
   base::Pickle p;
   for (size_t i = 0; i < vec.size(); ++i) {
     p.WriteString16(vec[i]);
   }
   return p;
@@ skipping 559 matching lines @@
     case 14:
       // No change of schema. Version 15 was introduced to force all databases
       // through an otherwise no-op migration process that will, however, now
       // correctly set the 'compatible version number'. Previously, it was
       // always being set to (and forever left at) version 1.
       meta_table_.SetCompatibleVersionNumber(kCompatibleVersionNumber);
     case 15:
       // Recreate the statistics.
       if (!stats_table_.MigrateToVersion(16))
         return false;
+    case 16: {
+      // No change in scheme: just disable auto sign-in by default in
+      // preparation to launch the credential management API.
+      if (!db_.Execute("UPDATE logins SET skip_zero_click = 1"))
+        return false;
+      // Fall through.
+    }
 
     // -------------------------------------------------------------------------
     // DO NOT FORGET to update |kCompatibleVersionNumber| if you add a migration
     // step that is a breaking change. This is needed so that an older version
     // of the browser can fail with a meaningful error when opening a newer
     // database, as opposed to failing on the first database operation.
     // -------------------------------------------------------------------------
     case kCurrentVersionNumber:
       // Already up to date.
       meta_table_.SetVersionNumber(kCurrentVersionNumber);
@@ skipping 664 matching lines @@
     UMA_HISTOGRAM_ENUMERATION("PasswordManager.PslDomainMatchTriggering",
                               psl_domain_match_metric, PSL_DOMAIN_MATCH_COUNT);
   }
 
   if (!statement->Succeeded())
     return false;
   return true;
 }
 
 }  // namespace password_manager