Add a field study to use new reload behavior even on desktops

content/browser/frame_host/navigation_controller_impl.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.
 
 /*
  * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  *     (http://www.torchmobile.com/)
  *
@@ skipping 267 matching lines @@
 
   // At this point, the |entries| is full of empty scoped_ptrs, so it can be
   // cleared out safely.
   entries->clear();
 
   // And finish the restore.
   FinishRestore(selected_navigation, type);
 }
 
 void NavigationControllerImpl::Reload(bool check_for_repost) {
-  ReloadInternal(check_for_repost, RELOAD);
+  ReloadType type = RELOAD;
+  if (base::FeatureList::IsEnabled(
+        features::kNonValidatingReloadOnNormalReload)) {
+    type = RELOAD_MAIN_RESOURCE;
+  }
+  ReloadInternal(check_for_repost, type);
 }
 void NavigationControllerImpl::ReloadToRefreshContent(bool check_for_repost) {
   ReloadType type = RELOAD;
   if (base::FeatureList::IsEnabled(
         features::kNonValidatingReloadOnRefreshContent)) {
     type = RELOAD_MAIN_RESOURCE;
   }
   ReloadInternal(check_for_repost, type);
 }
 void NavigationControllerImpl::ReloadBypassingCache(bool check_for_repost) {
@@ skipping 1756 matching lines @@
     }
   }
 }
 
 void NavigationControllerImpl::SetGetTimestampCallbackForTest(
     const base::Callback<base::Time()>& get_timestamp_callback) {
   get_timestamp_callback_ = get_timestamp_callback;
 }
 
 }  // namespace content