Upstream Chrome on iOS source code [2/11].

ios/chrome/browser/native_app_launcher/native_app_navigation_controller.h

+// 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.
+
+#ifndef IOS_CHROME_BROWSER_NATIVE_APP_LAUNCHER_NATIVE_APP_NAVIGATION_CONTROLLER_H_
+#define IOS_CHROME_BROWSER_NATIVE_APP_LAUNCHER_NATIVE_APP_NAVIGATION_CONTROLLER_H_
+
+#import <Foundation/Foundation.h>
+
+#import "ios/chrome/browser/native_app_launcher/native_app_navigation_controller_protocol.h"
+#import "ios/web/public/web_state/crw_web_controller_observer.h"
+
+@class Tab;
+
+namespace net {
+class URLRequestContextGetter;
+}  // namespace net
+
+// NativeAppNavigationController brings up a GAL Infobar if the webpage directs
+// it to do so and there are no other circumstances that would suppress its
+// display.
+@interface NativeAppNavigationController
+    : NSObject<CRWWebControllerObserver, NativeAppNavigationControllerProtocol>
+
+// Designated initializer.
+- (id)initWithRequestContextGetter:(net::URLRequestContextGetter*)context
+                               tab:(Tab*)tab;
+
+// Copies the list of applications possibly being installed and register to be
+// notified of their installation.
+- (void)copyStateFrom:(NativeAppNavigationController*)controller;
+@end
+
+#endif  // IOS_CHROME_BROWSER_NATIVE_APP_LAUNCHER_NATIVE_APP_NAVIGATION_CONTROLLER_H_