Remove ChromeOS Proximity Auth preferences from incognito whitelist.

Preferences related to ChromeOS Proximity Auth are removed from the
persistent storage list for incognito mode.
After this CL, if these preferences are changed from incognito mode,
they are only stored in memory and won't affect user profile.

Bug: 861722
Change-Id: Id9247d7ba200705786327aeab7f251a77de0435f
Reviewed-on: https://chromium-review.googlesource.com/1158067
Commit-Queue: Ramin Halavati <rhalavati@chromium.org>
Reviewed-by: Ryan Hansberry <hansberry@chromium.org>
Cr-Commit-Position: refs/heads/master@{#579757}

chrome/browser/prefs/pref_service_incognito_whitelist.cc

@@ -51,7 +51,6 @@
 #include "ash/public/cpp/ash_pref_names.h"
 #include "chrome/browser/chromeos/crostini/crostini_pref_names.h"
 #include "chromeos/chromeos_pref_names.h"
-#include "chromeos/components/proximity_auth/proximity_auth_pref_names.h"
 #include "components/arc/arc_prefs.h"
 #include "components/cryptauth/pref_names.h"
 #include "components/drive/drive_pref_names.h"
@@ -698,17 +697,6 @@ const char* incognito_whitelist[] = {
     chromeos::prefs::kQuirksClientLastServerCheck,
 #endif  // defined(OS_CHROMEOS)
 
-// chromeos/components/proximity_auth/proximity_auth_pref_names.h
-#if defined(OS_CHROMEOS)
-    proximity_auth::prefs::kEasyUnlockEnabled,
-    proximity_auth::prefs::kEasyUnlockEnabledStateSet,
-    proximity_auth::prefs::kEasyUnlockProximityThreshold,
-    proximity_auth::prefs::kProximityAuthLastPromotionCheckTimestampMs,
-    proximity_auth::prefs::kProximityAuthPromotionShownCount,
-    proximity_auth::prefs::kProximityAuthRemoteBleDevices,
-    proximity_auth::prefs::kProximityAuthIsChromeOSLoginEnabled,
-#endif  // defined(OS_CHROMEOS)
-
 // components/arc/arc_prefs.h
 #if defined(OS_CHROMEOS)
     arc::prefs::kArcActiveDirectoryPlayUserId, arc::prefs::kArcApps,