Remove ChromeOS language remap preferences from incognito whitelist.

Preferences related to ChromeOS language remap 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: I86da7605639c1d7f8bc0baf5bfbcd4aac573f020
Reviewed-on: https://chromium-review.googlesource.com/1166822Reviewed-by: Michael Giuffrida <michaelpg@chromium.org>
Commit-Queue: Ramin Halavati <rhalavati@chromium.org>
Cr-Commit-Position: refs/heads/master@{#581783}

chrome/browser/prefs/pref_service_incognito_whitelist.cc

@@ -49,7 +49,6 @@
 #include "chromeos/chromeos_pref_names.h"
 #include "components/drive/drive_pref_names.h"
 #include "ui/base/ime/chromeos/extension_ime_util.h"
-#include "ui/chromeos/events/pref_names.h"
 #endif  // defined(OS_CHROMEOS)
 
 namespace {
@@ -852,14 +851,6 @@ const char* temporary_incognito_whitelist[] = {
     chromeos::extension_ime_util::kBrailleImeEngineId,
     chromeos::extension_ime_util::kArcImeLanguage,
 #endif  // defined(OS_CHROMEOS)
-
-// ui/chromeos/events/pref_names.h
-#if defined(OS_CHROMEOS)
-    prefs::kLanguageRemapCapsLockKeyTo, prefs::kLanguageRemapSearchKeyTo,
-    prefs::kLanguageRemapControlKeyTo, prefs::kLanguageRemapAltKeyTo,
-    prefs::kLanguageRemapEscapeKeyTo, prefs::kLanguageRemapBackspaceKeyTo,
-    prefs::kLanguageRemapDiamondKeyTo,
-#endif  // defined(OS_CHROMEOS)
 };
 
 }  // namespace