Store default search provider data in dictionary pref.

chrome/browser/search_engines/template_url_service_factory.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/search_engines/template_url_service_factory.h"
 
 #include <string>
 
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/google/google_url_tracker_factory.h"
@@ skipping 106 matching lines @@
   registry->RegisterStringPref(
       prefs::kDefaultSearchProviderEncodings,
       std::string(),
       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
   registry->RegisterListPref(prefs::kDefaultSearchProviderAlternateURLs,
                              user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
   registry->RegisterStringPref(
       prefs::kDefaultSearchProviderSearchTermsReplacementKey,
       std::string(),
       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
+  // TODO(caitkp): Set a default value here.

[erikwright (departed), 2014/04/22 15:47:24]

In fact, the default should simply be NULL based on our subsequent discussions.

[Cait (Slow), 2014/04/22 19:54:13]

Done.

+  registry->RegisterDictionaryPref(
+      prefs::kDefaultSearchProviderData,
+      user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
 }
 
 content::BrowserContext* TemplateURLServiceFactory::GetBrowserContextToUse(
     content::BrowserContext* context) const {
   return chrome::GetBrowserContextRedirectedInIncognito(context);
 }
 
 bool TemplateURLServiceFactory::ServiceIsNULLWhileTesting() const {
   return true;
 }