Use ChromeBrowserStateManager instead of BrowserListIOS.

ios/chrome/browser/tabs/tab_model_list.h

Index: ios/chrome/browser/tabs/tab_model_list.h
diff --git a/ios/chrome/browser/tabs/tab_model_list.h b/ios/chrome/browser/tabs/tab_model_list.h
index bbba49029131339ef3b008a9f97ff20496068431..806fbc90eba6244f3ebf52955ce1c65a028cb05a 100644
--- a/ios/chrome/browser/tabs/tab_model_list.h
+++ b/ios/chrome/browser/tabs/tab_model_list.h
@@ -34,4 +34,12 @@ void UnregisterTabModelFromChromeBrowserState(
 NSArray<TabModel*>* GetTabModelsForChromeBrowserState(
     ios::ChromeBrowserState* browser_state);
 
+// Returns the last active TabModel associated with |browser_state|.
+TabModel* GetLastActiveTabModelForChromeBrowserState(
+    ios::ChromeBrowserState* browser_state);
+
+// Returns true if a incognito session is currently active (i.e. at least
+// one incognito tab is open).
+bool IsOffTheRecordSessionActive();
+
 #endif  // IOS_CHROME_BROWSER_TABS_TAB_MODEL_LIST_H_