Add a dummy entry with libsecret when initializing OSCrypt.

components/os_crypt/libsecret_util_linux.h

 // 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.
 
 #ifndef COMPONENTS_OS_CRYPT_LIBSECRET_UTIL_LINUX_H_
 #define COMPONENTS_OS_CRYPT_LIBSECRET_UTIL_LINUX_H_
 
 #include <libsecret/secret.h>
 
 #include <list>
@@ skipping 12 matching lines @@
   static decltype(&::secret_service_search_sync) secret_service_search_sync;
   static decltype(&::secret_value_get_text) secret_value_get_text;
   static decltype(&::secret_value_unref) secret_value_unref;
 
   // Loads the libsecret library and checks that it responds to queries.
   // Returns false if either step fails.
   // Repeated calls check the responsiveness every time, but do not load the
   // the library again if already successful.
   static bool EnsureLibsecretLoaded();
 
+  // Ensure that the default keyring is accessible. This won't prevent the user
+  // from locking their keyring while Chrome is running.
+  static void EnsureKeyringUnlocked();
+
  protected:
   static bool libsecret_loaded_;
 
  private:
   struct FunctionInfo {
     const char* name;
     void** pointer;
   };
 
   static const FunctionInfo kFunctions[];
@@ skipping 31 matching lines @@
   // the implementation details of containers. External objects keep references
   // to the objects stored in this container. Using a vector here will fail the
   // ASan tests, because it may move the objects and break the references.
   std::list<std::string> name_values_;
   GHashTable* attrs_;
 
   DISALLOW_COPY_AND_ASSIGN(LibsecretAttributesBuilder);
 };
 
 #endif  // COMPONENTS_OS_CRYPT_LIBSECRET_UTIL_LINUX_H_