Create TetherService, a TetherAllowed pref, and use DependencyManager for RegisterProfilePrefs call…

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 948 matching lines @@
 // Integer prefs indicating the minimum and maximum lengths of the lock screen
 // pin.
 const char kPinUnlockMinimumLength[] = "pin_unlock_minimum_length";
 const char kPinUnlockMaximumLength[] = "pin_unlock_maximum_length";
 // Boolean pref indicating whether users are allowed to set easy pins.
 const char kPinUnlockWeakPinsAllowed[] = "pin_unlock_weak_pins_allowed";
 
 // Boolean pref indicating whether fingerprint unlock is enabled.
 const char kEnableQuickUnlockFingerprint[] =
     "settings.enable_quick_unlock_fingerprint";
+
+// Whether a user is allowed to use Tether.
+const char kTetherAllowed[] = "tether.allowed";
 #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 1544 matching lines @@
 // settings.
 const char kSettingsResetPromptLastTriggeredForStartupUrls[] =
     "settings_reset_prompt.last_triggered_for_startup_urls";
 
 // Timestamp of the last time the settings reset prompt was shown during the
 // current prompt wave asking the user if they want to restore their homepage.
 const char kSettingsResetPromptLastTriggeredForHomepage[] =
     "settings_reset_prompt.last_triggered_for_homepage";
 
 }  // namespace prefs