Add a dummy entry with libsecret when initializing OSCrypt.

chrome/browser/password_manager/native_backend_libsecret_unittest.cc

 // Copyright (c) 2015 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 <stdarg.h>
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/location.h"
 #include "base/run_loop.h"
@@ skipping 80 matching lines @@
 ScopedVector<MockSecretItem>* global_mock_libsecret_items;
 bool global_mock_libsecret_reject_local_ids = false;
 
 gboolean 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;
+
   GHashTable* attributes =
       g_hash_table_new_full(g_str_hash, g_str_equal, g_free, g_free);
   va_list ap;
   va_start(ap, error);
   char* name;
   while ((name = va_arg(ap, gchar*))) {
     char* value;
     if (IsStringAttribute(schema, name)) {
       value = g_strdup(va_arg(ap, gchar*));
       VLOG(1) << "Adding item attribute " << name << ", value '" << value
@@ skipping 865 matching lines @@
   EXPECT_EQ(form_google_, *form_list[0]);
 
   EXPECT_EQ(1u, global_mock_libsecret_items->size());
   if (!global_mock_libsecret_items->empty()) {
     CheckMockSecretItem((*global_mock_libsecret_items)[0], form_google_,
                         "chrome-42");
   }
 }
 
 // TODO(mdm): add more basic tests here at some point.