Remove usage of Tab's |url| property from TabModel.

ios/chrome/browser/tabs/tab_model_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 <objc/runtime.h>
 
 #include "base/files/file_path.h"
 #include "base/memory/ptr_util.h"
 #include "base/run_loop.h"
 #include "base/strings/sys_string_conversions.h"
@@ skipping 331 matching lines @@
 }
 
 TEST_F(TabModelTest, RestoreSessionOnNTPTest) {
   Tab* tab = [tab_model_ insertTabWithURL:GURL(kChromeUINewTabURL)
                                  referrer:web::Referrer()
                                transition:ui::PAGE_TRANSITION_TYPED
                                    opener:nil
                               openedByDOM:NO
                                   atIndex:0
                              inBackground:NO];
+  web::WebStateImpl* web_state = static_cast<web::WebStateImpl*>(tab.webState);
+  web_state->GetNavigationManagerImpl().CommitPendingItem();
 
   SessionWindowIOS* window(CreateSessionWindow());
   [tab_model_ restoreSessionWindow:window];
 
   ASSERT_EQ(3U, [tab_model_ count]);
   EXPECT_NSEQ([tab_model_ tabAtIndex:1], [tab_model_ currentTab]);
   EXPECT_NSNE(tab, [tab_model_ tabAtIndex:0]);
   EXPECT_NSNE(tab, [tab_model_ tabAtIndex:1]);
   EXPECT_NSNE(tab, [tab_model_ tabAtIndex:2]);
 }
 
 TEST_F(TabModelTest, RestoreSessionOn2NtpTest) {
   Tab* tab0 = [tab_model_ insertTabWithURL:GURL(kChromeUINewTabURL)
                                   referrer:web::Referrer()
                                 transition:ui::PAGE_TRANSITION_TYPED
                                     opener:nil
                                openedByDOM:NO
                                    atIndex:0
                               inBackground:NO];
+  web::WebStateImpl* web_state = static_cast<web::WebStateImpl*>(tab0.webState);
+  web_state->GetNavigationManagerImpl().CommitPendingItem();
   Tab* tab1 = [tab_model_ insertTabWithURL:GURL(kChromeUINewTabURL)
                                   referrer:web::Referrer()
                                 transition:ui::PAGE_TRANSITION_TYPED
                                     opener:nil
                                openedByDOM:NO
                                    atIndex:1
                               inBackground:NO];
+  web_state = static_cast<web::WebStateImpl*>(tab1.webState);
+  web_state->GetNavigationManagerImpl().CommitPendingItem();
 
   SessionWindowIOS* window(CreateSessionWindow());
   [tab_model_ restoreSessionWindow:window];
 
   ASSERT_EQ(5U, [tab_model_ count]);
   EXPECT_NSEQ([tab_model_ tabAtIndex:3], [tab_model_ currentTab]);
   EXPECT_NSEQ(tab0, [tab_model_ tabAtIndex:0]);
   EXPECT_NSEQ(tab1, [tab_model_ tabAtIndex:1]);
   EXPECT_NSNE(tab0, [tab_model_ tabAtIndex:2]);
   EXPECT_NSNE(tab0, [tab_model_ tabAtIndex:3]);
   EXPECT_NSNE(tab0, [tab_model_ tabAtIndex:4]);
   EXPECT_NSNE(tab1, [tab_model_ tabAtIndex:2]);
   EXPECT_NSNE(tab1, [tab_model_ tabAtIndex:3]);
   EXPECT_NSNE(tab1, [tab_model_ tabAtIndex:4]);
 }
 
 TEST_F(TabModelTest, RestoreSessionOnAnyTest) {
   Tab* tab = [tab_model_ insertTabWithURL:GURL(kURL1)
                                  referrer:web::Referrer()
                                transition:ui::PAGE_TRANSITION_TYPED
                                    opener:nil
                               openedByDOM:NO
                                   atIndex:0
                              inBackground:NO];
+  web::WebStateImpl* web_state = static_cast<web::WebStateImpl*>(tab.webState);
+  web_state->GetNavigationManagerImpl().CommitPendingItem();
 
   SessionWindowIOS* window(CreateSessionWindow());
   [tab_model_ restoreSessionWindow:window];
 
   ASSERT_EQ(4U, [tab_model_ count]);
   EXPECT_NSEQ([tab_model_ tabAtIndex:2], [tab_model_ currentTab]);
   EXPECT_NSEQ(tab, [tab_model_ tabAtIndex:0]);
   EXPECT_NSNE(tab, [tab_model_ tabAtIndex:1]);
   EXPECT_NSNE(tab, [tab_model_ tabAtIndex:2]);
   EXPECT_NSNE(tab, [tab_model_ tabAtIndex:3]);
@@ skipping 756 matching lines @@
             [tab_model_ openerOfTab:[tab_model_ tabAtIndex:2]]);
   EXPECT_EQ([tab_model_ tabAtIndex:2],
             [tab_model_ openerOfTab:[tab_model_ tabAtIndex:0]]);
 
   // Clean up.
   EXPECT_TRUE([[NSFileManager defaultManager] removeItemAtPath:stashPath
                                                          error:nullptr]);
 }
 
 }  // anonymous namespace