Reload Local NTP on default search provider change.

chrome/browser/ui/search/search_tab_helper.cc

 // Copyright 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/ui/search/search_tab_helper.h"
 
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/search/search.h"
 #include "chrome/common/render_messages.h"
 #include "chrome/common/url_constants.h"
@@ skipping 22 matching lines @@
 }
 
 bool IsSearchResults(const content::WebContents* contents) {
   return !chrome::GetSearchTerms(contents).empty();
 }
 
 // TODO(kmadhusu): Move this helper from anonymous namespace to chrome
 // namespace and remove InstantPage::IsLocal().
 bool IsLocal(const content::WebContents* contents) {
   return contents &&
-      (contents->GetURL() == GURL(chrome::kChromeSearchLocalNtpUrl) ||
-       contents->GetURL() == GURL(chrome::kChromeSearchLocalGoogleNtpUrl));
+      contents->GetURL() == GURL(chrome::kChromeSearchLocalNtpUrl);
 }
 
 }  // namespace
 
 SearchTabHelper::SearchTabHelper(content::WebContents* web_contents)
     : WebContentsObserver(web_contents),
       is_search_enabled_(chrome::IsInstantExtendedAPIEnabled()),
       user_input_in_progress_(false),
       popup_is_open_(false),
       user_text_is_empty_(true),
@@ skipping 182 matching lines @@
   if (!web_contents()->IsActiveEntry(page_id))
     return;
 
   InstantSupportChanged(instant_support);
 }
 
 void SearchTabHelper::OnSetVoiceSearchSupported(int page_id, bool supported) {
   if (web_contents()->IsActiveEntry(page_id))
     model_.SetVoiceSearchSupported(supported);
 }