Remove IS_IOS checks in chrome/

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 994 matching lines @@
 const char kSpeechRecognitionFilterProfanities[] =
     "browser.speechinput_censor_results";
 
 // Boolean controlling whether history saving is disabled.
 const char kSavingBrowserHistoryDisabled[] = "history.saving_disabled";
 
 // Boolean controlling whether deleting browsing and download history is
 // permitted.
 const char kAllowDeletingBrowserHistory[] = "history.deleting_enabled";
 
-#if !defined(OS_ANDROID) && !defined(OS_IOS)
+#if !defined(OS_ANDROID)
 // Whether the "Click here to clear your browsing data" tooltip promo has been
 // shown on the Material Design History page.
 const char kMdHistoryMenuPromoShown[] = "history.menu_promo_shown";
 #endif
 
 // Boolean controlling whether SafeSearch is mandatory for Google Web Searches.
 const char kForceGoogleSafeSearch[] = "settings.force_google_safesearch";
 
 // Integer controlling whether Restrict Mode (moderate/strict) is mandatory on
 // YouTube. See |safe_search_util::YouTubeRestrictMode| for possible values.
@@ skipping 1543 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