Use stored render_frame_id_ instead of using GetRenderFrameHost(), as it may return NULL

components/renderer_context_menu/render_view_context_menu_base.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 "components/renderer_context_menu/render_view_context_menu_base.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/command_line.h"
@@ skipping 143 matching lines @@
          id <= content_context_custom_last;
 }
 
 RenderViewContextMenuBase::RenderViewContextMenuBase(
     content::RenderFrameHost* render_frame_host,
     const content::ContextMenuParams& params)
     : params_(params),
       source_web_contents_(WebContents::FromRenderFrameHost(render_frame_host)),
       browser_context_(source_web_contents_->GetBrowserContext()),
       menu_model_(this),
+      render_frame_id_(render_frame_host->GetRoutingID()),
       command_executed_(false),
-      render_process_id_(render_frame_host->GetProcess()->GetID()),
-      render_frame_id_(render_frame_host->GetRoutingID()) {
+      render_process_id_(render_frame_host->GetProcess()->GetID()) {
 }
 
 RenderViewContextMenuBase::~RenderViewContextMenuBase() {
 }
 
 // Menu construction functions -------------------------------------------------
 
 void RenderViewContextMenuBase::Init() {
   // Command id range must have been already initializerd.
   DCHECK_NE(-1, content_context_custom_first);
@@ skipping 207 matching lines @@
 }
 
 bool RenderViewContextMenuBase::IsCustomItemChecked(int id) const {
   return IsCustomItemCheckedInternal(params_.custom_items, id);
 }
 
 bool RenderViewContextMenuBase::IsCustomItemEnabled(int id) const {
   return IsCustomItemEnabledInternal(params_.custom_items, id);
 }