Add Now setting and migration logic.

chrome/browser/profiles/profile.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/profiles/profile.h"
 
 #include <string>
 
 #include "base/prefs/pref_service.h"
 #include "build/build_config.h"
@@ skipping 95 matching lines @@
       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
   registry->RegisterDictionaryPref(
       prefs::kSafeBrowsingIncidentsSent,
       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
 #if defined(ENABLE_GOOGLE_NOW)
   registry->RegisterBooleanPref(
       prefs::kGoogleGeolocationAccessEnabled,
       false,
       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
 #endif
+  // This pref is intentionally outside the above #if. That flag corresponds
+  // to the Notifier extension and does not gate the launcher page.
+  // TODO(skare): Remove or rename ENABLE_GOOGLE_NOW: http://crbug.com/459827.
+  registry->RegisterBooleanPref(
+      prefs::kGoogleNowLauncherEnabled,
+      true,
+      user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
   registry->RegisterBooleanPref(
       prefs::kDisableExtensions,
       false,
       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
 #if defined(ENABLE_EXTENSIONS)
   registry->RegisterBooleanPref(
       extensions::pref_names::kAlertsInitialized,
       false,
       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
 #endif
@@ skipping 130 matching lines @@
   if (a->IsSameProfile(b))
     return false;
   return a->GetOriginalProfile() < b->GetOriginalProfile();
 }
 
 double Profile::GetDefaultZoomLevelForProfile() {
   return GetDefaultStoragePartition(this)
       ->GetHostZoomMap()
       ->GetDefaultZoomLevel();
 }