Add a dummy entry with libsecret when initializing OSCrypt.

components/os_crypt/key_storage_libsecret_unittest.cc

 // Copyright 2016 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 <string>
 
 #include "base/logging.h"
 #include "base/macros.h"
 #include "components/os_crypt/key_storage_libsecret.h"
 #include "components/os_crypt/libsecret_util_linux.h"
@@ skipping 83 matching lines @@
 
 // static
 gboolean MockLibsecretLoader::mock_secret_password_store_sync(
     const SecretSchema* schema,
     const gchar* collection,
     const gchar* label,
     const gchar* password,
     GCancellable* cancellable,
     GError** error,
     ...) {
+  // TODO(crbug.com/660005) We don't read the dummy we store to unlock keyring.
+  if (strcmp("_chrome_dummy_schema_for_unlocking", schema->name) == 0)
+    return true;
+
   EXPECT_STREQ(kKeystoreSchemaV2.name, schema->name);
   delete stored_password_mock_ptr_;
   stored_password_mock_ptr_ = new MockSecretValue(password);
   return true;
 }
 
 // static
 void MockLibsecretLoader::mock_secret_value_unref(gpointer value) {}
 
 // static
@@ skipping 118 matching lines @@
 
 TEST_F(LibsecretTest, LibsecretMigratesFromSchemaV1ToV2) {
   KeyStorageLibsecret libsecret;
   MockLibsecretLoader::ResetForOSCrypt();
   MockLibsecretLoader::SetDeprecatedOSCryptPassword("swallow");
   std::string password = libsecret.GetKey();
   EXPECT_EQ("swallow", password);
 }
 
 }  // namespace