Remove the extra copy of page id.

content/browser/renderer_host/render_view_host_impl.cc

 // Copyright (c) 2012 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/renderer_host/render_view_host_impl.h"
 
 #include <set>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 195 matching lines @@
     bool has_initialized_audio_host)
     : RenderWidgetHostImpl(widget_delegate,
                            instance->GetProcess(),
                            routing_id,
                            hidden),
       frames_ref_count_(0),
       delegate_(delegate),
       instance_(static_cast<SiteInstanceImpl*>(instance)),
       waiting_for_drag_context_response_(false),
       enabled_bindings_(0),
-      page_id_(-1),
       is_active_(!swapped_out),
       is_swapped_out_(swapped_out),
       main_frame_routing_id_(main_frame_routing_id),
       is_waiting_for_close_ack_(false),
       sudden_termination_allowed_(false),
       render_view_termination_status_(base::TERMINATION_STATUS_STILL_RUNNING),
       virtual_keyboard_requested_(false),
       is_focused_element_editable_(false),
       updating_web_preferences_(false),
       weak_factory_(this) {
@@ skipping 793 matching lines @@
 }
 
 void RenderViewHostImpl::OnRenderProcessGone(int status, int exit_code) {
   // Do nothing, otherwise RenderWidgetHostImpl will assume it is not a
   // RenderViewHostImpl and destroy itself.
   // TODO(nasko): Remove this hack once RenderViewHost and RenderWidgetHost are
   // decoupled.
 }
 
 void RenderViewHostImpl::OnUpdateState(int32 page_id, const PageState& state) {
-  // If the following DCHECK fails, you have encountered a tricky edge-case that
-  // has evaded reproduction for a very long time. Please report what you were
-  // doing on http://crbug.com/407376, whether or not you can reproduce the
-  // failure.
-  DCHECK_EQ(page_id, page_id_);
-
   // Without this check, the renderer can trick the browser into using
   // filenames it can't access in a future session restore.
   if (!CanAccessFilesOfPageState(state)) {
     bad_message::ReceivedBadMessage(
         GetProcess(), bad_message::RVH_CAN_ACCESS_FILES_OF_PAGE_STATE);
     return;
   }
 
   delegate_->UpdateState(this, page_id, state);
 }
@@ skipping 371 matching lines @@
     if (!policy->CanReadFile(GetProcess()->GetID(), file))
       policy->GrantReadFile(GetProcess()->GetID(), file);
   }
 }
 
 void RenderViewHostImpl::SelectWordAroundCaret() {
   Send(new ViewMsg_SelectWordAroundCaret(GetRoutingID()));
 }
 
 }  // namespace content