Remove the concept of currentItemIndex

components/sessions/ios/ios_live_tab.mm

 // Copyright 2015 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 "components/sessions/ios/ios_live_tab.h"
 #include "ios/web/public/navigation_manager.h"
 
 namespace {
 const char kIOSLiveTabWebStateUserDataKey[] = "ios_live_tab";
 }
@@ skipping 15 matching lines @@
 
 IOSLiveTab::IOSLiveTab(web::WebState* web_state) : web_state_(web_state) {}
 
 IOSLiveTab::~IOSLiveTab() {}
 
 bool IOSLiveTab::IsInitialBlankNavigation() {
   return navigation_manager()->GetItemCount() == 0;
 }
 
 int IOSLiveTab::GetCurrentEntryIndex() {
-  return navigation_manager()->GetCurrentItemIndex();
+  return navigation_manager()->GetLastCommittedItemIndex();
 }
 
 int IOSLiveTab::GetPendingEntryIndex() {
   return navigation_manager()->GetPendingItemIndex();
 }
 
 sessions::SerializedNavigationEntry IOSLiveTab::GetEntryAtIndex(int index) {
   return sessions::IOSSerializedNavigationBuilder::FromNavigationItem(
       index, *navigation_manager()->GetItemAtIndex(index));
 }
 
 sessions::SerializedNavigationEntry IOSLiveTab::GetPendingEntry() {
   return sessions::IOSSerializedNavigationBuilder::FromNavigationItem(
       GetPendingEntryIndex(), *navigation_manager()->GetPendingItem());
 }
 
 int IOSLiveTab::GetEntryCount() {
   return navigation_manager()->GetItemCount();
 }
 
 const std::string& IOSLiveTab::GetUserAgentOverride() const {
   // Dynamic user agent overrides are not supported on iOS.
   return user_agent_override_;
 }
 
 }  // namespace sessions