Adding pref to store the user-selected proximity threshold.

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 1322 matching lines @@
 // 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";
 
+// How close the remote and the local device should be in order to use Easy
+// Unlock.
+const char kEasyUnlockProximityThreshold[] = "easy_unlock.proximity_threshold";
+
 #if BUILDFLAG(ENABLE_EXTENSIONS)
 // Used to indicate whether or not the toolbar redesign bubble has been shown
 // and acknowledged, and the last time the bubble was shown.
 const char kToolbarIconSurfacingBubbleAcknowledged[] =
     "toolbar_icon_surfacing_bubble_acknowledged";
 const char kToolbarIconSurfacingBubbleLastShowTime[] =
     "toolbar_icon_surfacing_bubble_show_time";
 #endif
 
 #if BUILDFLAG(ENABLE_WEBRTC)
@@ skipping 1206 matching lines @@
 // internal format (int64) in local store.  (I.e., this is not a per-profile
 // pref.)
 const char kClipboardLastModifiedTime[] = "ui.clipboard.last_modified_time";
 #endif
 
 #if BUILDFLAG(ENABLE_OFFLINE_PAGES)
 const char kOfflinePrefetchBackoff[] = "offline_prefetch.backoff";
 #endif
 
 }  // namespace prefs