Implement pin storage backend.

chrome/common/pref_names.h

 // 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.
 
 // Constants for the names of various preferences, for easier changing.
 
 #ifndef CHROME_COMMON_PREF_NAMES_H_
 #define CHROME_COMMON_PREF_NAMES_H_
 
 #include <stddef.h>
@@ skipping 271 matching lines @@
 extern const char kTouchVirtualKeyboardEnabled[];
 extern const char kTouchScreenEnabled[];
 extern const char kTouchPadEnabled[];
 extern const char kWakeOnWifiDarkConnect[];
 extern const char kCaptivePortalAuthenticationIgnoresProxy[];
 extern const char kForceMaximizeOnFirstRun[];
 extern const char kPlatformKeys[];
 extern const char kUnifiedDesktopEnabledByDefault[];
 extern const char kAllowScreenLock[];
 extern const char kHatsLastInteractionTimestamp[];
+extern const char kQuickUnlockPinSalt[];
+extern const char kQuickUnlockPinSecret[];
 #endif  // defined(OS_CHROMEOS)
 extern const char kShowHomeButton[];
 extern const char kRecentlySelectedEncoding[];
 extern const char kDeleteBrowsingHistory[];
 extern const char kDeleteDownloadHistory[];
 extern const char kDeleteCache[];
 extern const char kDeleteCookies[];
 extern const char kDeletePasswords[];
 extern const char kDeleteFormData[];
 extern const char kDeleteHostedAppsData[];
@@ skipping 494 matching lines @@
 #if defined(GOOGLE_CHROME_BUILD)
 extern const char kMediaRouterCloudServicesPrefSet[];
 extern const char kMediaRouterEnableCloudServices[];
 #endif  // defined(GOOGLE_CHROME_BUILD)
 extern const char kMediaRouterFirstRunFlowAcknowledged[];
 #endif
 
 }  // namespace prefs
 
 #endif  // CHROME_COMMON_PREF_NAMES_H_