Remove Supervised User preferences from incognito whitelist.

Preferences related to Supervised Users 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: I74259a24fa1747298f80a627247f5777fad163f4
Reviewed-on: https://chromium-review.googlesource.com/1159365Reviewed-by: Marc Treib <treib@chromium.org>
Commit-Queue: Ramin Halavati <rhalavati@chromium.org>
Cr-Commit-Position: refs/heads/master@{#580118}

chrome/browser/prefs/pref_service_incognito_whitelist.cc

@@ -201,16 +201,6 @@ const char* temporary_incognito_whitelist[] = {
     prefs::kRestoreOnStartup, prefs::kSessionExitedCleanly,
     prefs::kSessionExitType, prefs::kObservedSessionTime,
     prefs::kRecurrentSSLInterstitial, prefs::kSiteEngagementLastUpdateTime,
-    prefs::kSupervisedUserApprovedExtensions,
-    prefs::kSupervisedUserCustodianEmail, prefs::kSupervisedUserCustodianName,
-    prefs::kSupervisedUserCustodianProfileImageURL,
-    prefs::kSupervisedUserCustodianProfileURL,
-    prefs::kSupervisedUserManualHosts, prefs::kSupervisedUserManualURLs,
-    prefs::kSupervisedUserSafeSites, prefs::kSupervisedUserSecondCustodianEmail,
-    prefs::kSupervisedUserSecondCustodianName,
-    prefs::kSupervisedUserSecondCustodianProfileImageURL,
-    prefs::kSupervisedUserSecondCustodianProfileURL,
-    prefs::kSupervisedUserSharedSettings, prefs::kSupervisedUserWhitelists,
     prefs::kURLsToRestoreOnStartup,
 
 #if BUILDFLAG(ENABLE_RLZ)
@@ -348,7 +338,7 @@ const char* temporary_incognito_whitelist[] = {
 
     prefs::kProfileAvatarIndex, prefs::kProfileUsingDefaultName,
     prefs::kProfileName, prefs::kProfileUsingDefaultAvatar,
-    prefs::kProfileUsingGAIAAvatar, prefs::kSupervisedUserId,
+    prefs::kProfileUsingGAIAAvatar,
 
     prefs::kProfileGAIAInfoUpdateTime, prefs::kProfileGAIAInfoPictureURL,
 
@@ -372,10 +362,6 @@ const char* temporary_incognito_whitelist[] = {
     prefs::kUserNativePrintersAllowed,
 #endif  // OS_CHROMEOS
 
-    prefs::kDefaultSupervisedUserFilteringBehavior,
-
-    prefs::kSupervisedUserCreationAllowed, prefs::kSupervisedUsers,
-
     prefs::kMessageCenterDisabledExtensionIds,
     prefs::kMessageCenterDisabledSystemComponentIds,
 
@@ -659,9 +645,6 @@ const char* temporary_incognito_whitelist[] = {
     prefs::kEasyUnlockLocalStateTpmKeys, prefs::kEasyUnlockLocalStateUserPrefs,
 
     prefs::kRecoveryComponentNeedsElevation,
-
-    prefs::kRegisteredSupervisedUserWhitelists,
-
 #if BUILDFLAG(ENABLE_BACKGROUND_MODE)
 // prefs::kRestartInBackground,
 #endif