Revert 124583 (See crbug.com/114259) Original info for r124583 is:

chrome/browser/prefs/session_startup_pref.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/prefs/session_startup_pref.h"
 
 #include <string>
 
-#include "base/values.h"
 #include "chrome/browser/net/url_fixer_upper.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/prefs/scoped_user_pref_update.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/pref_names.h"
 
 #if defined(OS_MACOSX)
 #include "chrome/browser/ui/cocoa/window_restore_utils.h"
 #endif
 
 namespace {
 
 // For historical reasons the enum and value registered in the prefs don't line
 // up. These are the values registered in prefs.
-const int kPrefValueHomePage = 0;  // Deprecated
+const int kPrefValueHomePage = 0;
 const int kPrefValueLast = 1;
 const int kPrefValueURLs = 4;
 const int kPrefValueNewTab = 5;
 
 // Converts a SessionStartupPref::Type to an integer written to prefs.
 int TypeToPrefValue(SessionStartupPref::Type type) {
   switch (type) {
+    case SessionStartupPref::HOMEPAGE: return kPrefValueHomePage;
     case SessionStartupPref::LAST:     return kPrefValueLast;
     case SessionStartupPref::URLS:     return kPrefValueURLs;
     default:                           return kPrefValueNewTab;
   }
 }
 
-void SetNewUrlList(PrefService* prefs) {
-  ListValue new_url_pref_list;
-  StringValue* home_page = new StringValue(prefs->GetString(prefs::kHomePage));
-  new_url_pref_list.Append(home_page);
-  prefs->Set(prefs::kURLsToRestoreOnStartup, new_url_pref_list);
-}
-
 }  // namespace
 
 // static
 void SessionStartupPref::RegisterUserPrefs(PrefService* prefs) {
 #if defined(OS_CHROMEOS)
   SessionStartupPref::Type type = SessionStartupPref::LAST;
 #else
   SessionStartupPref::Type type = SessionStartupPref::DEFAULT;
 #endif
 
@@ skipping 46 matching lines @@
   DCHECK(profile);
   return GetStartupPref(profile->GetPrefs());
 }
 
 // static
 SessionStartupPref SessionStartupPref::GetStartupPref(PrefService* prefs) {
   DCHECK(prefs);
   SessionStartupPref pref(
       PrefValueToType(prefs->GetInteger(prefs::kRestoreOnStartup)));
 
-  // Migrate from "Open the home page" to "Open the following URLs". If the user
-  // had the "Open the homepage" option selected, then we need to switch them to
-  // "Open the following URLs" and set the list of URLs to a list containing
-  // just the user's homepage.
-  if (pref.type == SessionStartupPref::HOMEPAGE) {
-    prefs->SetInteger(prefs::kRestoreOnStartup, kPrefValueURLs);
-    pref.type = SessionStartupPref::URLS;
-    SetNewUrlList(prefs);
-  }
-
   // Always load the urls, even if the pref type isn't URLS. This way the
   // preferences panels can show the user their last choice.
   const ListValue* url_pref_list = prefs->GetList(
       prefs::kURLsToRestoreOnStartup);
   if (url_pref_list) {
     for (size_t i = 0; i < url_pref_list->GetSize(); ++i) {
       Value* value = NULL;
       if (url_pref_list->Get(i, &value)) {
         std::string url_text;
         if (value->GetAsString(&url_text)) {
@@ skipping 30 matching lines @@
     case kPrefValueLast:     return SessionStartupPref::LAST;
     case kPrefValueURLs:     return SessionStartupPref::URLS;
     case kPrefValueHomePage: return SessionStartupPref::HOMEPAGE;
     default:                 return SessionStartupPref::DEFAULT;
   }
 }
 
 SessionStartupPref::SessionStartupPref(Type type) : type(type) {}
 
 SessionStartupPref::~SessionStartupPref() {}