Upstream Chrome on iOS source code [8/11].

ios/chrome/browser/ui/settings/native_apps_collection_view_controller_private.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_PRIVATE_H_
+#define IOS_CHROME_BROWSER_UI_SETTINGS_NATIVE_APPS_COLLECTION_VIEW_CONTROLLER_PRIVATE_H_
+
+#import "ios/chrome/browser/ui/settings/native_apps_collection_view_controller.h"
+
+// This file is a private header for NativeAppsCollectionViewController.
+// It exposes private details for testing purposes.
+
+namespace settings {
+
+// User actions.
+typedef enum {
+  kNativeAppsActionDidNothing,
+  kNativeAppsActionClickedInstall,
+  kNativeAppsActionTurnedDefaultBrowserOn,
+  kNativeAppsActionTurnedDefaultBrowserOff,
+  kNativeAppsActionTurnedAutoOpenOn,
+  kNativeAppsActionTurnedAutoOpenOff,
+  kNativeAppsActionCount,
+} NativeAppsAction;
+
+}  // namespace settings
+
+// Arbitrary value to shift indices (from 0 to N), to a range that doesn't
+// include 0, in order to not mistake the default value (0) with the first
+// index. That way, an invalid (or default) tag value can be detected.
+// That means that all app cells have a tag computed by adding their index and
+// this shift.
+extern const NSInteger kTagShift;
+
+#endif  // IOS_CHROME_BROWSER_UI_SETTINGS_NATIVE_APPS_COLLECTION_VIEW_CONTROLLER_PRIVATE_H_