Store default search provider data in dictionary pref.

chrome/browser/search_engines/template_url_service.cc

Index: chrome/browser/search_engines/template_url_service.cc
diff --git a/chrome/browser/search_engines/template_url_service.cc b/chrome/browser/search_engines/template_url_service.cc
index b75082390bdc5a2acaace0cad8a21288e22b1eaf..b89ec64a9a1f29e65c0db98be1bcf20bcbcde199 100644
--- a/chrome/browser/search_engines/template_url_service.cc
+++ b/chrome/browser/search_engines/template_url_service.cc
@@ -33,6 +33,7 @@
 #include "chrome/browser/search_engines/search_host_to_urls_map.h"
 #include "chrome/browser/search_engines/search_terms_data.h"
 #include "chrome/browser/search_engines/template_url.h"
+#include "chrome/browser/search_engines/template_url_keys.h"
 #include "chrome/browser/search_engines/template_url_prepopulate_data.h"
 #include "chrome/browser/search_engines/template_url_service_observer.h"
 #include "chrome/browser/search_engines/util.h"
@@ -678,6 +679,7 @@ bool TemplateURLService::CanMakeDefault(const TemplateURL* url) {
 void TemplateURLService::SetUserSelectedDefaultSearchProvider(
     TemplateURL* url) {
   SetDefaultSearchProvider(url);
+  default_search_manager_.SaveToPrefService(GetPrefs(), &url->data_);
 }
 
 TemplateURL* TemplateURLService::GetDefaultSearchProvider() {