Revert of Replace TabModel with WebStateList in GoogleLandingController.

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

Index: ios/chrome/browser/ui/ntp/google_landing_controller_unittest.mm
diff --git a/ios/chrome/browser/ui/ntp/google_landing_controller_unittest.mm b/ios/chrome/browser/ui/ntp/google_landing_controller_unittest.mm
index b34dce334e2716b9c09716ef394d4743c2538e0f..3a711ffd175ccf43ab741dd8169f7850a7b4841a 100644
--- a/ios/chrome/browser/ui/ntp/google_landing_controller_unittest.mm
+++ b/ios/chrome/browser/ui/ntp/google_landing_controller_unittest.mm
@@ -12,8 +12,6 @@
 #include "ios/chrome/browser/sessions/ios_chrome_tab_restore_service_factory.h"
 #import "ios/chrome/browser/ui/ntp/google_landing_controller.h"
 #import "ios/chrome/browser/ui/ntp/google_landing_mediator.h"
-#include "ios/chrome/browser/web_state_list/fake_web_state_list_delegate.h"
-#include "ios/chrome/browser/web_state_list/web_state_list.h"
 #include "ios/chrome/test/block_cleanup_test.h"
 #include "ios/chrome/test/ios_chrome_scoped_testing_local_state.h"
 #include "ios/web/public/test/test_web_thread.h"
@@ -57,14 +55,13 @@
     // 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()];
+                  tabModel:nil];
   };
 
   base::MessageLoopForUI message_loop_;
@@ -72,8 +69,6 @@
   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_;