Solidify Entry discarding logic (NavigationHandle keeps its ID)

content/public/browser/navigation_handle.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 "content/public/browser/navigation_handle.h"
 
 #include <utility>
 
 #include "content/browser/frame_host/navigation_handle_impl.h"
 #include "content/browser/frame_host/navigator.h"
 #include "content/browser/frame_host/render_frame_host_impl.h"
 #include "content/browser/web_contents/web_contents_impl.h"
 
 namespace content {
 
 WebContents* NavigationHandle::GetWebContents() {
   // The NavigationHandleImpl cannot access the WebContentsImpl as it would be
   // a layering violation, hence the cast here.
   return static_cast<WebContentsImpl*>(
       static_cast<NavigationHandleImpl*>(this)->GetDelegate());
 }
 
 // static
 scoped_ptr<NavigationHandle> NavigationHandle::CreateNavigationHandleForTesting(
     const GURL& url,
     RenderFrameHost* render_frame_host) {
   scoped_ptr<NavigationHandleImpl> handle_impl = NavigationHandleImpl::Create(
       url,
       static_cast<RenderFrameHostImpl*>(render_frame_host)->frame_tree_node(),
-      base::TimeTicks::Now());
+      base::TimeTicks::Now(), nullptr);
   return scoped_ptr<NavigationHandle>(std::move(handle_impl));
 }
 
 }  // namespace content