[Smart Lock] Add a setting to require close proximity in order for unlocking to work.

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/basictypes.h"
 #include "chrome/common/pref_font_webkit_names.h"
 
 namespace prefs {
@@ skipping 1189 matching lines @@
 // a preference was reset.
 const char kPreferenceResetTime[] = "prefs.preference_reset_time";
 
 // The GCM channel's enabled state.
 const char kGCMChannelEnabled[] = "gcm.channel_enabled";
 
 // How many Service Workers are registered with the Push API (could be zero).
 const char kPushMessagingRegistrationCount[] =
     "gcm.push_messaging_registration_count";
 
+// Whether a user is allowed to use Easy Unlock.
+const char kEasyUnlockAllowed[] = "easy_unlock.allowed";
+
 // Whether Easy Unlock is enabled.
 const char kEasyUnlockEnabled[] = "easy_unlock.enabled";
 
+// Preference storing Easy Unlock pairing data.
+const char kEasyUnlockPairing[] = "easy_unlock.pairing";
+
+// Whether close proximity between the remote and the local device is required
+// in order to use Easy Unlock.
+const char kEasyUnlockProximityRequired[] = "easy_unlock.proximity_required";
+
 // Whether to show the Easy Unlock first run tutorial.
 const char kEasyUnlockShowTutorial[] = "easy_unlock.show_tutorial";
 
-// Preference storing Easy Unlock pairing data.
-const char kEasyUnlockPairing[] = "easy_unlock.pairing";
-
-// Whether a user is allowed to use Easy Unlock.
-const char kEasyUnlockAllowed[] = "easy_unlock.allowed";
-
 // A cache of zero suggest results using JSON serialized into a string.
 const char kZeroSuggestCachedResults[] = "zerosuggest.cachedresults";
 
 // *************** LOCAL STATE ***************
 // These are attached to the machine/installation
 
 // A pref to configure networks device-wide. Its value must be a list of
 // NetworkConfigurations according to the OpenNetworkConfiguration
 // specification.
 // Currently, this pref is only used to store the policy. The user's
@@ skipping 1037 matching lines @@
 // Whether Guest Mode is enabled within the browser.
 const char kBrowserGuestModeEnabled[] = "profile.browser_guest_enabled";
 
 // Whether Adding a new Person is enabled within the user manager.
 const char kBrowserAddPersonEnabled[] = "profile.add_person_enabled";
 
 // A dictionary that maps user id to hardlock state.
 const char kEasyUnlockHardlockState[] = "easy_unlock.hardlock_state";
 
 }  // namespace prefs