Removed NativeAppsCollectionViewController and related code.

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 364 matching lines @@
                        identity:(ChromeIdentity*)identity
                     accessPoint:(signin_metrics::AccessPoint)accessPoint
                     promoAction:(signin_metrics::PromoAction)promoAction
                        callback:(ShowSigninCommandCompletionCallback)callback;
 // Wraps a callback with one that first checks if sign-in was completed
 // successfully and the profile wasn't swapped before invoking.
 - (ShowSigninCommandCompletionCallback)successfulSigninCompletion:
     (ProceduralBlock)callback;
 // Shows the Sync encryption passphrase (part of Settings).
 - (void)showSyncEncryptionPassphrase;
-// Shows the Native Apps Settings UI (part of Settings).
-- (void)showNativeAppsSettings;
 // Shows the Clear Browsing Data Settings UI (part of Settings).
 - (void)showClearBrowsingDataSettingsController;
 // Shows the Contextual search UI (part of Settings).
 - (void)showContextualSearchSettingsController;
 // Shows the tab switcher UI.
 - (void)showTabSwitcher;
 // Starts a voice search on the current BVC.
 - (void)startVoiceSearch;
 // Dismisses the tab switcher UI without animation into the given model.
 - (void)dismissTabSwitcherWithoutAnimationInModel:(TabModel*)tabModel;
@@ skipping 1067 matching lines @@
             browsing_data::CalculateBeginDeleteTime(timePeriod);
         [ChromeWebViewFactory clearExternalCookies:browserState
                                           fromTime:beginDeleteTime
                                             toTime:base::Time::Max()];
       }
       break;
     }
     case IDC_RESET_ALL_WEBVIEWS:
       [self.currentBVC resetAllWebViews];
       break;
-    case IDC_SHOW_GOOGLE_APPS_SETTINGS:
-      [self showNativeAppsSettings];
-      break;
     case IDC_SHOW_CLEAR_BROWSING_DATA_SETTINGS:
       [self showClearBrowsingDataSettingsController];
       break;
     case IDC_SHOW_CONTEXTUAL_SEARCH_SETTINGS:
       [self showContextualSearchSettingsController];
       break;
     case IDC_CLOSE_MODALS:
       [self dismissModalDialogsWithCompletion:nil];
       break;
     case IDC_SHOW_ADD_ACCOUNT:
@@ skipping 649 matching lines @@
       return;
     }
     DCHECK_EQ(self.mainBVC, self.currentBVC);
     SigninManager* signinManager =
         ios::SigninManagerFactory::GetForBrowserState(browserState);
     if (signinManager->IsAuthenticated())
       callback();
   } copy];
 }
 
-- (void)showNativeAppsSettings {
-  if (_settingsNavigationController)
-    return;
-  _settingsNavigationController =
-      [SettingsNavigationController newNativeAppsController:_mainBrowserState
-                                                   delegate:self];
-  [[self topPresentedViewController]
-      presentViewController:_settingsNavigationController
-                   animated:YES
-                 completion:nil];
-}
-
 - (void)closeSettingsAnimated:(BOOL)animated
                    completion:(ProceduralBlock)completion {
   DCHECK(_settingsNavigationController);
   [_settingsNavigationController settingsWillBeDismissed];
   UIViewController* presentingViewController =
       [_settingsNavigationController presentingViewController];
   DCHECK(presentingViewController);
   [presentingViewController dismissViewControllerAnimated:animated
                                                completion:^{
                                                  if (completion)
@@ skipping 412 matching lines @@
   };
 
   callbackCounter->IncrementCount();
   [self removeBrowsingDataFromBrowserState:_mainBrowserState
                                       mask:removeAllMask
                                 timePeriod:browsing_data::TimePeriod::ALL_TIME
                          completionHandler:decrementCallbackCounterCount];
 }
 
 @end