[ChromeOS] Expose keyboard remapping to signin screen.

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 663 matching lines @@
 extern const char kEnrollmentRecoveryRequired[];
 extern const char kUsedPolicyCertificates[];
 extern const char kServerBackedDeviceState[];
 extern const char kCustomizationDefaultWallpaperURL[];
 extern const char kLogoutStartedLast[];
 extern const char kConsumerManagementStage[];
 extern const char kIsBootstrappingSlave[];
 extern const char kReportArcStatusEnabled[];
 extern const char kNetworkThrottlingEnabled[];
 extern const char kTouchscreenEnabledLocal[];
+extern const char kFocusedPodUserId[];
 #endif  // defined(OS_CHROMEOS)
 
 extern const char kClearPluginLSODataEnabled[];
 extern const char kPepperFlashSettingsEnabled[];
 extern const char kDiskCacheDir[];
 extern const char kDiskCacheSize[];
 extern const char kMediaCacheSize[];
 
 extern const char kChromeOsReleaseChannel[];
 
@@ skipping 200 matching lines @@
 extern const char kBookmarksBubbleIOSPromoDismissed[];
 extern const char kNumberBookmarksFootNoteIOSPromoShown[];
 extern const char kBookmarksFootNoteIOSPromoDismissed[];
 extern const char kNumberHistoryPageIOSPromoShown[];
 extern const char kHistoryPageIOSPromoDismissed[];
 #endif
 
 }  // namespace prefs
 
 #endif  // CHROME_COMMON_PREF_NAMES_H_