DRP: Make secure proxy check URL a DRP param

chrome/browser/flag_descriptions.h

 // Copyright 2017 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 CHROME_BROWSER_FLAG_DESCRIPTIONS_H_
 #define CHROME_BROWSER_FLAG_DESCRIPTIONS_H_
 
 // Includes needed for macros allowing conditional compilation of some strings.
 #include "build/build_config.h"
 #include "build/buildflag.h"
@@ skipping 75 matching lines @@
 
 extern const char kContextualSuggestionsCarouselName[];
 extern const char kContextualSuggestionsCarouselDescription[];
 
 extern const char kCreditCardAssistName[];
 extern const char kCreditCardAssistDescription[];
 
 extern const char kCrossProcessGuestViewIsolationName[];
 extern const char kCrossProcessGuestViewIsolationDescription[];
 
-extern const char kDataReductionProxyCarrierTestName[];
-extern const char kDataReductionProxyCarrierTestDescription[];
-
 extern const char kDataReductionProxyLoFiName[];
 extern const char kDataReductionProxyLoFiDescription[];
 extern const char kDataReductionProxyLoFiAlwaysOn[];
 extern const char kDataReductionProxyLoFiCellularOnly[];
 extern const char kDataReductionProxyLoFiDisabled[];
 extern const char kDataReductionProxyLoFiSlowConnectionsOnly[];
 
 extern const char kDatasaverPromptName[];
 extern const char kDatasaverPromptDescription[];
 extern const char kDatasaverPromptDemoMode[];
@@ skipping 1449 matching lines @@
 #endif  // defined(TOOLKIT_VIEWS) || defined(OS_ANDROID)
 
 // ============================================================================
 // Don't just add flags to the end, put them in the right section in
 // alphabetical order. See top instructions for more.
 // ============================================================================
 
 }  // namespace flag_descriptions
 
 #endif  // CHROME_BROWSER_FLAG_DESCRIPTIONS_H_