Create setting that disables password stores

chrome/browser/password_manager/password_store_factory.cc

 // Copyright (c) 2012 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 "chrome/browser/password_manager/password_store_factory.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/environment.h"
 #include "base/memory/ref_counted.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/rand_util.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "build/build_config.h"
 #include "chrome/browser/profiles/incognito_helpers.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/signin/signin_manager_factory.h"
 #include "chrome/browser/sync/glue/sync_start_util.h"
 #include "chrome/browser/sync/profile_sync_service_factory.h"
 #include "chrome/browser/web_data_service_factory.h"
+#include "chrome/common/chrome_paths_internal.h"
 #include "chrome/common/chrome_switches.h"
 #include "components/browser_sync/profile_sync_service.h"
 #include "components/keyed_service/content/browser_context_dependency_manager.h"
 #include "components/os_crypt/os_crypt_switches.h"
 #include "components/password_manager/core/browser/http_data_cleaner.h"
 #include "components/password_manager/core/browser/login_database.h"
 #include "components/password_manager/core/browser/password_store.h"
 #include "components/password_manager/core/browser/password_store_default.h"
 #include "components/password_manager/core/browser/password_store_factory_util.h"
 #include "components/password_manager/core/common/password_manager_pref_names.h"
@@ skipping 155 matching lines @@
   // (In all cases we fall back on the basic store in case of failure.)
   base::nix::DesktopEnvironment desktop_env = GetDesktopEnvironment();
   std::string store_type =
       base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
           switches::kPasswordStore);
   LinuxBackendUsed used_backend = PLAINTEXT;
 
   PrefService* prefs = profile->GetPrefs();
   LocalProfileId id = GetLocalProfileId(prefs);
 
+  bool use_preference = base::CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kEnableEncryptionSelection);
+  bool use_backend = true;
+  if (use_preference) {
+    base::FilePath user_data_dir;
+    chrome::GetDefaultUserDataDirectory(&user_data_dir);
+    use_backend = os_crypt::GetBackendUse(user_data_dir);
+  }
+
   os_crypt::SelectedLinuxBackend selected_backend =
-      os_crypt::SelectBackend(store_type, desktop_env);
+      os_crypt::SelectBackend(store_type, use_backend, desktop_env);
 
   std::unique_ptr<PasswordStoreX::NativeBackend> backend;
   if (selected_backend == os_crypt::SelectedLinuxBackend::KWALLET ||
       selected_backend == os_crypt::SelectedLinuxBackend::KWALLET5) {
     VLOG(1) << "Trying KWallet for password storage.";
     base::nix::DesktopEnvironment used_desktop_env =
         selected_backend == os_crypt::SelectedLinuxBackend::KWALLET
             ? base::nix::DESKTOP_ENVIRONMENT_KDE4
             : base::nix::DESKTOP_ENVIRONMENT_KDE5;
     backend.reset(new NativeBackendKWallet(id, used_desktop_env));
@@ skipping 156 matching lines @@
         break;
       case LIBSECRET:
         usage = OTHER_LIBSECRET;
         break;
     }
   }
   UMA_HISTOGRAM_ENUMERATION("PasswordManager.LinuxBackendStatistics", usage,
                             MAX_BACKEND_USAGE_VALUE);
 }
 #endif