Do not reset NavigationHandle when navigating same-page

content/browser/frame_host/navigator.cc

 // Copyright 2014 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 "content/browser/frame_host/navigator.h"
 
 #include "base/time/time.h"
 #include "content/common/resource_request_body_impl.h"
 #include "content/public/browser/stream_handle.h"
 
@@ skipping 20 matching lines @@
 }
 
 base::TimeTicks Navigator::GetCurrentLoadStart() {
   return base::TimeTicks::Now();
 }
 
 void Navigator::OnBeginNavigation(FrameTreeNode* frame_tree_node,
                                   const CommonNavigationParams& common_params,
                                   const BeginNavigationParams& begin_params) {}
 
-NavigationHandleImpl* Navigator::GetNavigationHandleForFrameHost(
-    RenderFrameHostImpl* render_frame_host) {
-  return nullptr;
-}
-
 }  // namespace content