Solidify Entry discarding logic (NavigationHandle keeps its ID)

content/browser/frame_host/render_frame_host_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.
 
 #include "content/browser/frame_host/render_frame_host_impl.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/containers/hash_tables.h"
@@ skipping 993 matching lines @@
   // navigation.
   if (navigation_handle_ &&
       navigation_handle_->GetURL() != validated_params.url) {
     navigation_handle_.reset();
   }
 
   // Synchronous renderer-initiated navigations will send a
   // DidCommitProvisionalLoad IPC without a prior DidStartProvisionalLoad
   // message.
   if (!navigation_handle_) {
-    navigation_handle_ = NavigationHandleImpl::Create(
-        validated_params.url, frame_tree_node_, base::TimeTicks::Now());
+    // There is no pending NavigationEntry in these cases, so pass null.
+    navigation_handle_ =
+        NavigationHandleImpl::Create(validated_params.url, frame_tree_node_,
+                                     base::TimeTicks::Now(), nullptr);
   }
 
   accessibility_reset_count_ = 0;
   frame_tree_node()->navigator()->DidNavigate(this, validated_params);
 
   // For a top-level frame, there are potential security concerns associated
   // with displaying graphics from a previously loaded page after the URL in
   // the omnibar has been changed. It is unappealing to clear the page
   // immediately, but if the renderer is taking a long time to issue any
   // compositor output (possibly because of script deliberately creating this
@@ skipping 1527 matching lines @@
   *dst = src;
 
   if (src.routing_id != -1)
     dst->tree_id = RoutingIDToAXTreeID(src.routing_id);
 
   if (src.parent_routing_id != -1)
     dst->parent_tree_id = RoutingIDToAXTreeID(src.parent_routing_id);
 }
 
 }  // namespace content