Remove unused parameter for -replaceTab:withTab:keepOldTabOpen:.

ios/chrome/browser/ui/browser_view_controller.mm

 // 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.
 
 #import "ios/chrome/browser/ui/browser_view_controller.h"
 
 #import <AssetsLibrary/AssetsLibrary.h>
 #import <MobileCoreServices/MobileCoreServices.h>
 #import <PassKit/PassKit.h>
 #import <Photos/Photos.h>
@@ skipping 3665 matching lines @@
       [oldTab recordStateInHistory];
       DCHECK([newTab navigationManager]);
       CRWSessionController* newHistory =
           [newTab navigationManager]->GetSessionController();
       DCHECK([oldTab navigationManager]);
       CRWSessionController* oldHistory =
           [oldTab navigationManager]->GetSessionController();
       [newHistory insertStateFromSessionController:oldHistory];
       [[newTab nativeAppNavigationController]
           copyStateFrom:[oldTab nativeAppNavigationController]];
-      [_model replaceTab:oldTab withTab:newTab keepOldTabOpen:NO];
+      [_model replaceTab:oldTab withTab:newTab];
 
       // Set isPrerenderTab to NO after replacing the tab. This will allow the
       // BrowserViewController to detect that a pre-rendered tab is switched in,
       // and show the prerendering animation.
       newTab.isPrerenderTab = NO;
 
       BOOL loadingFinished =
           [newTab.webController loadPhase] == web::PAGE_LOADED;
       [self tabLoadComplete:newTab withSuccess:loadingFinished];
 
@@ skipping 1447 matching lines @@
 
 - (UIView*)voiceSearchButton {
   return _voiceSearchButton;
 }
 
 - (id<LogoAnimationControllerOwner>)logoAnimationControllerOwner {
   return [self currentLogoAnimationControllerOwner];
 }
 
 @end