Update entry page type to include error pages when appropriate.

chrome/browser/ui/search/instant_page.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 "chrome/browser/ui/search/instant_page.h"
 
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/search/search.h"
 #include "chrome/browser/ui/search/search_model.h"
 #include "chrome/browser/ui/search/search_tab_helper.h"
@@ skipping 56 matching lines @@
     InstantSupportDetermined(model->instant_support() == INSTANT_SUPPORT_YES);
 }
 
 bool InstantPage::ShouldProcessAboutToNavigateMainFrame() {
   return false;
 }
 
 void InstantPage::DidCommitProvisionalLoadForFrame(
     content::RenderFrameHost* render_frame_host,
     const GURL& url,
+    bool url_is_unreachable,
     ui::PageTransition /* transition_type */) {
   if (!render_frame_host->GetParent() &&
       ShouldProcessAboutToNavigateMainFrame())
     delegate_->InstantPageAboutToNavigateMainFrame(web_contents(), url);
 }
 
 void InstantPage::ModelChanged(const SearchModel::State& old_state,
                                const SearchModel::State& new_state) {
   if (old_state.instant_support != new_state.instant_support)
     InstantSupportDetermined(new_state.instant_support == INSTANT_SUPPORT_YES);
 }
 
 void InstantPage::InstantSupportDetermined(bool supports_instant) {
   delegate_->InstantSupportDetermined(web_contents(), supports_instant);
 
   // If the page doesn't support Instant, stop listening to it.
   if (!supports_instant)
     ClearContents();
 }
 
 void InstantPage::ClearContents() {
   if (web_contents()) {
     SearchTabHelper::FromWebContents(web_contents())->model()->RemoveObserver(
         this);
   }
 
   Observe(NULL);
 }