Remove configuration policy on iOS.

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

 // 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.
 
 #include "ios/public/provider/chrome/browser/chrome_browser_provider.h"
 
 #include <cstddef>
 
 #include "base/logging.h"
 #include "components/metrics/metrics_provider.h"
@@ skipping 110 matching lines @@
 autofill::CardUnmaskPromptView*
 ChromeBrowserProvider::CreateCardUnmaskPromptView(
     autofill::CardUnmaskPromptController* controller) {
   return nullptr;
 }
 
 std::string ChromeBrowserProvider::GetRiskData() {
   return std::string();
 }
 
-policy::BrowserPolicyConnector*
-ChromeBrowserProvider::GetBrowserPolicyConnector() {
-  return nullptr;
-}
-
 rappor::RapporService* ChromeBrowserProvider::GetRapporService() {
   return nullptr;
 }
 
 bool ChromeBrowserProvider::IsOffTheRecordSessionActive() {
   return false;
 }
 
 void ChromeBrowserProvider::GetFaviconForURL(
     ios::ChromeBrowserState* browser_state,
     const GURL& page_url,
     const std::vector<int>& desired_sizes_in_pixel,
     const favicon_base::FaviconResultsCallback& callback) const {}
 
 bool ChromeBrowserProvider::IsSafeBrowsingEnabled(
     const base::Closure& on_update_callback) {
   return false;
 }
 
 void ChromeBrowserProvider::OnMetricsServicesManagerClientDestroyed() {}
 
 }  // namespace ios