Removed IsNativeAppLauncherEnabled() experiment

ios/chrome/app/main_controller.mm

 // Copyright 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.
 
 #import "ios/chrome/app/main_controller.h"
 
 #include <memory>
 #include <string>
 
 #import <CoreSpotlight/CoreSpotlight.h>
@@ skipping 1959 matching lines @@
 }
 
 - (void)showSettings {
   if (_settingsNavigationController)
     return;
   [[DeferredInitializationRunner sharedInstance]
       runBlockIfNecessary:kPrefObserverInit];
   DCHECK(_localStatePrefObserverBridge);
   _settingsNavigationController.reset([SettingsNavigationController
       newSettingsMainControllerWithMainBrowserState:_mainBrowserState
-                                currentBrowserState:self.currentBrowserState
                                            delegate:self]);
   [[self topPresentedViewController]
       presentViewController:_settingsNavigationController
                    animated:YES
                  completion:nil];
 }
 
 - (void)showAccountsSettings {
   if (_settingsNavigationController)
     return;
@@ skipping 636 matching lines @@
   };
 
   callbackCounter->IncrementCount();
   [self removeBrowsingDataFromBrowserState:_mainBrowserState
                                       mask:removeAllMask
                                 timePeriod:browsing_data::TimePeriod::ALL_TIME
                          completionHandler:decrementCallbackCounterCount];
 }
 
 @end