Add CommandDispatcher to BrowserViewController.

ios/chrome/browser/ui/ntp/google_landing_controller.h

 // Copyright 2013 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_NTP_GOOGLE_LANDING_CONTROLLER_H_
 #define IOS_CHROME_BROWSER_UI_NTP_GOOGLE_LANDING_CONTROLLER_H_
 
 #import <UIKit/UIKit.h>
 
 #include <memory>
 
 #import "ios/chrome/browser/ui/ntp/google_landing_consumer.h"
 #import "ios/chrome/browser/ui/ntp/new_tab_page_panel_protocol.h"
 #import "ios/chrome/browser/ui/toolbar/toolbar_owner.h"
 #import "ios/public/provider/chrome/browser/voice/logo_animation_controller.h"
 
+@protocol GoogleLandingCommands;
 @protocol GoogleLandingDataSource;
+@protocol OmniboxFocuser;
+@protocol UrlLoader;
 
 // Google centric new tab page.
 @interface GoogleLandingController
     : UIViewController<GoogleLandingConsumer,
                        LogoAnimationControllerOwnerOwner,
                        NewTabPagePanelProtocol,
                        ToolbarOwner>
 
 @property(nonatomic, assign) id<GoogleLandingDataSource> dataSource;
 
+@property(nonatomic, assign)
+    id<GoogleLandingCommands, UrlLoader, OmniboxFocuser>
+        dispatcher;
+
 @end
 
 #endif  // IOS_CHROME_BROWSER_UI_NTP_GOOGLE_LANDING_CONTROLLER_H_