Removed NativeAppsCollectionViewController and related code.

ios/chrome/browser/ui/settings/native_apps_collection_view_controller.h

-// Copyright 2015 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.
-
-#ifndef IOS_CHROME_BROWSER_UI_SETTINGS_NATIVE_APPS_COLLECTION_VIEW_CONTROLLER_H_
-#define IOS_CHROME_BROWSER_UI_SETTINGS_NATIVE_APPS_COLLECTION_VIEW_CONTROLLER_H_
-
-#import "ios/chrome/browser/store_kit/store_kit_launcher.h"
-#import "ios/chrome/browser/ui/settings/settings_root_collection_view_controller.h"
-
-namespace net {
-class URLRequestContextGetter;
-}  // namespace net
-
-// Settings view controller that displays the list of native apps that Chrome
-// can launch given a specific URL. From this view controller, native apps can
-// be installed if they are not present on the device. If they are present, a
-// switch lets the user opt-in to open automatically related links.
-// Icons for apps are static resources on a server and are therefore retrieved
-// and displayed asynchronously.
-@interface NativeAppsCollectionViewController
-    : SettingsRootCollectionViewController<StoreKitLauncher>
-
-// Designated initializer. |requestContextGetter| is kept as a weak reference,
-// therefore must outlive the initialized instance.
-- (id)initWithURLRequestContextGetter:
-    (net::URLRequestContextGetter*)requestContextGetter;
-
-@end
-
-#endif  // IOS_CHROME_BROWSER_UI_SETTINGS_NATIVE_APPS_COLLECTION_VIEW_CONTROLLER_H_