Remove ChromeBrowserProvider::IsOffTheRecordSessionActive().

ios/public/provider/chrome/browser/chrome_browser_provider.h

 // Copyright 2013 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.
 
 #ifndef IOS_PUBLIC_PROVIDER_CHROME_BROWSER_CHROME_BROWSER_PROVIDER_H_
 #define IOS_PUBLIC_PROVIDER_CHROME_BROWSER_CHROME_BROWSER_PROVIDER_H_
 
 #include <CoreGraphics/CoreGraphics.h>
 #import <Foundation/Foundation.h>
 #include <stddef.h>
@@ skipping 73 matching lines @@
   // Returns an instance of a Chrome identity service.
   virtual ChromeIdentityService* GetChromeIdentityService();
   // Returns an instance of a GeolocationUpdaterProvider.
   virtual GeolocationUpdaterProvider* GetGeolocationUpdaterProvider();
   // Returns "enabled", "disabled", or "default".
   virtual std::string DataReductionProxyAvailability();
   // Returns the distribution brand code.
   virtual std::string GetDistributionBrandCode();
   // Returns risk data used in Wallet requests.
   virtual std::string GetRiskData();
-  // Returns whether there is an Off-The-Record session active.
-  virtual bool IsOffTheRecordSessionActive();
   // Get the favicon for |page_url| and run |callback| with result when loaded.
   // Note. |callback| is always run asynchronously.
   virtual void GetFaviconForURL(
       ChromeBrowserState* browser_state,
       const GURL& page_url,
       const std::vector<int>& desired_sizes_in_pixel,
       const favicon_base::FaviconResultsCallback& callback) const;
   // Creates and returns a new styled text field with the given |frame|.
   virtual UITextField<TextFieldStyling>* CreateStyledTextField(
       CGRect frame) const NS_RETURNS_RETAINED;
@@ skipping 53 matching lines @@
   // not dismiss them.
   virtual void LogIfModalViewsArePresented() const;
 
   // Returns an instance of the spotlight provider.
   virtual SpotlightProvider* GetSpotlightProvider() const;
 };
 
 }  // namespace ios
 
 #endif  // IOS_PUBLIC_PROVIDER_CHROME_BROWSER_CHROME_BROWSER_PROVIDER_H_