md-settings: Added settings for fingerprint unlock.

chrome/common/pref_names.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/common/pref_names.h"
 
 #include "base/macros.h"
 #include "build/build_config.h"
 #include "chrome/common/features.h"
 #include "chrome/common/pref_font_webkit_names.h"
@@ skipping 906 matching lines @@
 // on this list.
 const char kQuickUnlockModeWhitelist[] = "quick_unlock_mode_whitelist";
 // Enum that specifies how often a user has to enter their password to continue
 // using quick unlock. These values are the same as the ones in
 // chromeos::QuickUnlockPasswordConfirmationFrequency.
 // 0 - six hours. Users will have to enter their password every six hours.
 // 1 - twelve hours. Users will have to enter their password every twelve hours.
 // 2 - day. Users will have to enter their password every day.
 // 3 - week. Users will have to enter their password every week.
 const char kQuickUnlockTimeout[] = "quick_unlock_timeout";
+
+// Boolean pref indicating whether fingerprint unlock is enabled.
+const char kEnableQuickUnlockFingerprint[] =
+    "settings.enable_quick_unlock_fingerprint";
 #endif  // defined(OS_CHROMEOS)
 
 // A boolean pref set to true if a Home button to open the Home pages should be
 // visible on the toolbar.
 const char kShowHomeButton[] = "browser.show_home_button";
 
 // Boolean pref to define the default setting for "block offensive words".
 // The old key value is kept to avoid unnecessary migration code.
 const char kSpeechRecognitionFilterProfanities[] =
     "browser.speechinput_censor_results";
@@ skipping 1393 matching lines @@
 const char kSearchGeolocationPreDisclosureMetricsRecorded[] =
     "search_geolocation_pre_disclosure_metrics_recorded";
 
 // Whether the metrics for the state of geolocation post-disclosure being shown
 // have been recorded.
 const char kSearchGeolocationPostDisclosureMetricsRecorded[] =
     "search_geolocation_post_disclosure_metrics_recorded";
 #endif
 
 }  // namespace prefs