Pass WebState to NativeAppNavigationController

ios/chrome/browser/native_app_launcher/native_app_navigation_util.h

+// Copyright 2017 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_NATIVE_APP_LAUNCHER_NATIVE_APP_NAVIGATION_UTIL_H_
+#define IOS_CHROME_BROWSER_NATIVE_APP_LAUNCHER_NATIVE_APP_NAVIGATION_UTIL_H_
+
+namespace web {
+class WebState;
+}  // namespace web
+
+namespace native_app_launcher {
+
+// Returns whether the current state is arrived at via a "link navigation" in
+// the sense of Native App Launcher, i.e. a navigation caused by an explicit
+// user action in the rectangle of the web content area.
+bool IsLinkNavigation(web::WebState* web_state);
+
+}  // namespace native_app_launcher
+
+#endif  // IOS_CHROME_BROWSER_NATIVE_APP_LAUNCHER_NATIVE_APP_NAVIGATION_UTIL_H_