MD Settings: Fix Appearance home page URL crash

chrome/browser/ui/webui/settings/settings_startup_pages_handler.cc

 // Copyright 2015 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/webui/settings/settings_startup_pages_handler.h"
 
 #include <memory>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 26 matching lines @@
                  base::Unretained(this)));
   web_ui()->RegisterMessageCallback("onStartupPrefsPageLoad",
       base::Bind(&StartupPagesHandler::HandleOnStartupPrefsPageLoad,
                  base::Unretained(this)));
   web_ui()->RegisterMessageCallback("removeStartupPage",
       base::Bind(&StartupPagesHandler::HandleRemoveStartupPage,
                  base::Unretained(this)));
   web_ui()->RegisterMessageCallback("setStartupPagesToCurrentPages",
       base::Bind(&StartupPagesHandler::HandleSetStartupPagesToCurrentPages,
                  base::Unretained(this)));
-  web_ui()->RegisterMessageCallback("validateStartupPage",
-      base::Bind(&StartupPagesHandler::HandleValidateStartupPage,
-                 base::Unretained(this)));
 }
 
 void StartupPagesHandler::OnJavascriptAllowed() {
   startup_custom_pages_table_model_.SetObserver(this);
 
   PrefService* prefService = Profile::FromWebUI(web_ui())->GetPrefs();
   SessionStartupPref pref = SessionStartupPref::GetStartupPref(prefService);
   startup_custom_pages_table_model_.SetURLs(pref.urls);
 
   if (pref.urls.empty())
@@ skipping 115 matching lines @@
   startup_custom_pages_table_model_.Remove(selected_index);
   SaveStartupPagesPref();
 }
 
 void StartupPagesHandler::HandleSetStartupPagesToCurrentPages(
     const base::ListValue* args) {
   startup_custom_pages_table_model_.SetToCurrentlyOpenPages();
   SaveStartupPagesPref();
 }
 
-void StartupPagesHandler::HandleValidateStartupPage(
-    const base::ListValue* args) {
-  CHECK_EQ(args->GetSize(), 2U);
-
-  const base::Value* callback_id;
-  CHECK(args->Get(0, &callback_id));
-
-  std::string url_string;
-  CHECK(args->GetString(1, &url_string));
-
-  bool valid = settings_utils::FixupAndValidateStartupPage(url_string, nullptr);
-  ResolveJavascriptCallback(*callback_id, base::Value(valid));
-}
-
 void StartupPagesHandler::SaveStartupPagesPref() {
   PrefService* prefs = Profile::FromWebUI(web_ui())->GetPrefs();
 
   SessionStartupPref pref = SessionStartupPref::GetStartupPref(prefs);
   pref.urls = startup_custom_pages_table_model_.GetURLs();
 
   if (pref.urls.empty())
     pref.type = SessionStartupPref::DEFAULT;
 
   SessionStartupPref::SetStartupPref(prefs, pref);
 }
 
 void StartupPagesHandler::UpdateStartupPages() {
   const SessionStartupPref startup_pref = SessionStartupPref::GetStartupPref(
       Profile::FromWebUI(web_ui())->GetPrefs());
   startup_custom_pages_table_model_.SetURLs(startup_pref.urls);
   // The change will go to the JS code in the
   // StartupPagesHandler::OnModelChanged() method.
 }
 
 }  // namespace settings