Remove TabModel -replaceWebState: method.

ios/chrome/browser/tabs/tab_unittest.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 <UIKit/UIKit.h>
 
 #include <memory>
 
 #include "base/callback.h"
 #include "base/files/file_path.h"
@@ skipping 176 matching lines @@
     ASSERT_TRUE(chrome_browser_state_->CreateHistoryService(true));
     history_service_ = ios::HistoryServiceFactory::GetForBrowserState(
         chrome_browser_state_.get(), ServiceAccessType::EXPLICIT_ACCESS);
 
     ios::ChromeBrowserState* browser_state = chrome_browser_state_.get();
     if (UseOffTheRecordBrowserState())
       browser_state = browser_state->GetOffTheRecordChromeBrowserState();
 
     mock_web_controller_ =
         [OCMockObject niceMockForClass:[CRWWebController class]];
-    std::unique_ptr<WebStateImpl> web_state_impl;
-    web_state_impl.reset(new WebStateImpl(browser_state));
+    auto web_state_impl = base::MakeUnique<WebStateImpl>(browser_state);
     web_state_impl->SetWebController(mock_web_controller_);
     web_state_impl->GetNavigationManagerImpl().InitializeSession(
         @"window1", @"opener", NO, 0);
     web_state_impl_ = web_state_impl.get();
-    [[[(OCMockObject*)mock_web_controller_ stub]
+    [[[static_cast<OCMockObject*>(mock_web_controller_) stub]
         andReturnValue:OCMOCK_VALUE(web_state_impl_)] webStateImpl];
     web_controller_view_.reset([[UIView alloc] init]);
-    [[[(OCMockObject*)mock_web_controller_ stub]
+    [[[static_cast<OCMockObject*>(mock_web_controller_) stub]
         andReturn:web_controller_view_.get()] view];
-    tab_.reset([[Tab alloc] initWithWindowName:nil
-                                        opener:nullptr
-                                   openedByDOM:NO
-                                         model:nil
-                                  browserState:browser_state]);
+    tab_.reset([[Tab alloc] initWithWebState:std::move(web_state_impl)
+                                       model:nil
+                            attachTabHelpers:NO]);
     web::NavigationManager::WebLoadParams params(GURL("chrome://version/"));
     [[tab_ webController] loadWithParams:params];
-    [tab_ replaceWebState:std::move(web_state_impl)];
 
     // There should be no entries in the history at this point.
     history::QueryResults results;
     QueryAllHistory(&results);
     EXPECT_EQ(0UL, results.size());
     mock_external_app_launcher_.reset([[ExternalAppLauncherMock alloc]
         initWithRepresentedObject:
             [OCMockObject mockForClass:[ExternalAppLauncher class]]]);
     [tab_ replaceExternalAppLauncher:mock_external_app_launcher_];
   }
@@ skipping 325 matching lines @@
       [[FakeNativeAppMetadata alloc] init]);
 
   // Turn auto open on.
   [metadata setShouldAutoOpenLinks:YES];
   int expectedCallCount = 2;
   TestOpenNativeAppURL(testURL, NO, expectedCallCount, NO);
   EXPECT_FALSE([metadata shouldAutoOpenLinks]);
 }
 
 }  // namespace