Log error if decryption fails in LoginDatabase

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 1045 matching lines @@
 
 // static
 LoginDatabase::EncryptionResult LoginDatabase::InitPasswordFormFromStatement(
     PasswordForm* form,
     sql::Statement& s) {
   std::string encrypted_password;
   s.ColumnBlobAsString(COLUMN_PASSWORD_VALUE, &encrypted_password);
   base::string16 decrypted_password;
   EncryptionResult encryption_result =
       DecryptedString(encrypted_password, &decrypted_password);
-  if (encryption_result != ENCRYPTION_RESULT_SUCCESS)
+  if (encryption_result != ENCRYPTION_RESULT_SUCCESS) {
+    VLOG(0) << "Password decryption failed";

[vasilii, 2016/06/27 13:54:18]

Print encryption_result?

[vabr (Chromium), 2016/06/27 14:36:39]

Good point, done.

     return encryption_result;
+  }
 
   std::string tmp = s.ColumnString(COLUMN_ORIGIN_URL);
   form->origin = GURL(tmp);
   tmp = s.ColumnString(COLUMN_ACTION_URL);
   form->action = GURL(tmp);
   form->username_element = s.ColumnString16(COLUMN_USERNAME_ELEMENT);
   form->username_value = s.ColumnString16(COLUMN_USERNAME_VALUE);
   form->password_element = s.ColumnString16(COLUMN_PASSWORD_ELEMENT);
   form->password_value = decrypted_password;
   form->submit_element = s.ColumnString16(COLUMN_SUBMIT_ELEMENT);
@@ skipping 270 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