Show alternate error page for non-existent URLs.

chrome/browser/android/tab_android.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 "chrome/browser/android/tab_android.h"
 #include "chrome/browser/api/infobars/infobar_service.h"
 #include "chrome/browser/autofill/autofill_external_delegate.h"
 #include "chrome/browser/autofill/autofill_manager.h"
 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
 #include "chrome/browser/extensions/tab_helper.h"
 #include "chrome/browser/favicon/favicon_tab_helper.h"
 #include "chrome/browser/history/history_tab_helper.h"
 #include "chrome/browser/password_manager/password_manager.h"
 #include "chrome/browser/password_manager/password_manager_delegate_impl.h"
 #include "chrome/browser/prerender/prerender_tab_helper.h"
 #include "chrome/browser/sessions/session_tab_helper.h"
 #include "chrome/browser/ssl/ssl_tab_helper.h"
 #include "chrome/browser/translate/translate_tab_helper.h"
+#include "chrome/browser/ui/alternate_error_tab_observer.h"
 #include "chrome/browser/ui/android/window_android_helper.h"
 #include "chrome/browser/ui/autofill/tab_autofill_manager_delegate.h"
 #include "chrome/browser/ui/blocked_content/blocked_content_tab_helper.h"
 #include "chrome/browser/ui/bookmarks/bookmark_tab_helper.h"
 #include "chrome/browser/ui/browser_tab_contents.h"
 #include "chrome/browser/ui/find_bar/find_tab_helper.h"
 #include "chrome/browser/ui/prefs/prefs_tab_helper.h"
 #include "chrome/browser/ui/sync/tab_contents_synced_tab_delegate.h"
 #include "chrome/browser/ui/tab_contents/core_tab_helper.h"
 #include "chrome/browser/view_type_utils.h"
@@ skipping 20 matching lines @@
   contents->SetUserData(&kTabHelpersInitializedUserDataKey,
                             new base::SupportsUserData::Data());
 
   // Set the view type.
   chrome::SetViewType(contents, chrome::VIEW_TYPE_TAB_CONTENTS);
 
   // SessionTabHelper comes first because it sets up the tab ID, and other
   // helpers may rely on that.
   SessionTabHelper::CreateForWebContents(contents);
 
+  AlternateErrorPageTabObserver::CreateForWebContents(contents);
   autofill::TabAutofillManagerDelegate::CreateForWebContents(contents);
   AutofillManager::CreateForWebContentsAndDelegate(
       contents,
       autofill::TabAutofillManagerDelegate::FromWebContents(contents));
   AutofillExternalDelegate::CreateForWebContentsAndManager(
       contents, AutofillManager::FromWebContents(contents));
   AutofillManager::FromWebContents(contents)->SetExternalDelegate(
       AutofillExternalDelegate::FromWebContents(contents));
   BlockedContentTabHelper::CreateForWebContents(contents);
   BookmarkTabHelper::CreateForWebContents(contents);
@@ skipping 31 matching lines @@
 }
 
 TabAndroid::TabAndroid() : tab_id_(-1) {
 }
 
 TabAndroid::~TabAndroid() {
 }
 
 void TabAndroid::RunExternalProtocolDialog(const GURL& url) {
 }