Add CommandDispatcher to BrowserViewController.

ios/chrome/browser/ui/ntp/google_landing_controller_unittest.mm

 // 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.
 
 #include <memory>
 
 #include "base/memory/ptr_util.h"
 #include "base/message_loop/message_loop.h"
 #include "components/search_engines/template_url_service.h"
 #include "ios/chrome/browser/browser_state/test_chrome_browser_state.h"
@@ skipping 41 matching lines @@
     TemplateURLService* template_url_service =
         ios::TemplateURLServiceFactory::GetForBrowserState(
             chrome_browser_state_.get());
     template_url_service->Load();
 
     // Set up stub UrlLoader.
     mockUrlLoader_ = [OCMockObject mockForProtocol:@protocol(UrlLoader)];
     controller_ = [[GoogleLandingController alloc] init];
     webStateList_ = base::MakeUnique<WebStateList>(&webStateListDelegate_);
     mediator_ = [[GoogleLandingMediator alloc]
-          initWithConsumer:controller_
-              browserState:chrome_browser_state_.get()
-                    loader:(id<UrlLoader>)mockUrlLoader_
-                   focuser:nil
-        webToolbarDelegate:nil
-              webStateList:webStateList_.get()];
+        initWithConsumer:controller_
+            browserState:chrome_browser_state_.get()
+              dispatcher:nil
+            webStateList:webStateList_.get()];
   };
 
   void TearDown() override { [mediator_ shutdown]; }
 
   base::MessageLoopForUI message_loop_;
   web::TestWebThread ui_thread_;
   web::TestWebThread io_thread_;
   IOSChromeScopedTestingLocalState local_state_;
   std::unique_ptr<TestChromeBrowserState> chrome_browser_state_;
   FakeWebStateListDelegate webStateListDelegate_;
   std::unique_ptr<WebStateList> webStateList_;
   OCMockObject* mockUrlLoader_;
   GoogleLandingMediator* mediator_;
   GoogleLandingController* controller_;
 };
 
 TEST_F(GoogleLandingControllerTest, TestConstructorDestructor) {
   EXPECT_TRUE(controller_);
 }
 
 }  // anonymous namespace