Remove old webui History page on desktop and mobile

content/public/common/content_features.cc

 // 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 "build/build_config.h"
 #include "content/public/common/content_features.h"
 
 namespace features {
 
 // All features in alphabetical order.
@@ skipping 292 matching lines @@
 const base::Feature kSendBeaconThrowForBlobWithNonSimpleType{
     "SendBeaconThrowForBlobWithNonSimpleType",
     base::FEATURE_DISABLED_BY_DEFAULT};
 
 #if defined(OS_ANDROID)
 // Autofill Accessibility in Android.
 // crbug.com/627860
 const base::Feature kAndroidAutofillAccessibility{
     "AndroidAutofillAccessibility", base::FEATURE_DISABLED_BY_DEFAULT};
 
-// A browsing history manager implementation for Android.
-const base::Feature kNativeAndroidHistoryManager{
-  "AndroidHistoryManager", base::FEATURE_DISABLED_BY_DEFAULT};
-
 // FeatureList definition for the Seccomp field trial.
 const base::Feature kSeccompSandboxAndroid{"SeccompSandboxAndroid",
                                            base::FEATURE_ENABLED_BY_DEFAULT};
 
 // Service worker based payment apps as defined by w3c here:
 // https://w3c.github.io/webpayments-payment-apps-api/
 const base::Feature kServiceWorkerPaymentApps{
     "ServiceWorkerPaymentApps",
     base::FEATURE_DISABLED_BY_DEFAULT};
 
@@ skipping 13 matching lines @@
 #endif
 
 #if defined(OS_WIN)
 // Emergency "off switch" for new Windows sandbox security mitigation,
 // sandbox::MITIGATION_EXTENSION_POINT_DISABLE.
 const base::Feature kWinSboxDisableExtensionPoints{
     "WinSboxDisableExtensionPoint", base::FEATURE_ENABLED_BY_DEFAULT};
 #endif
 
 }  // namespace features