Store default search provider data in dictionary pref.

chrome/browser/search_engines/template_url_service.h

Index: chrome/browser/search_engines/template_url_service.h
diff --git a/chrome/browser/search_engines/template_url_service.h b/chrome/browser/search_engines/template_url_service.h
index e2dc86a5d87fda9a557120938123713964ff3f7a..affdd1449e990a25c9eec2c20c89aa0054ac2b41 100644
--- a/chrome/browser/search_engines/template_url_service.h
+++ b/chrome/browser/search_engines/template_url_service.h
@@ -390,6 +390,7 @@ class TemplateURLService : public WebDataServiceConsumer,
                            DontUpdateKeywordSearchForNonReplaceable);
   FRIEND_TEST_ALL_PREFIXES(TemplateURLServiceTest, ChangeGoogleBaseValue);
   FRIEND_TEST_ALL_PREFIXES(TemplateURLServiceTest, MergeDeletesUnusedProviders);
+  FRIEND_TEST_ALL_PREFIXES(TemplateURLServiceTest, PrefSaving);
   FRIEND_TEST_ALL_PREFIXES(TemplateURLServiceSyncTest,
                            CreateSyncDataFromTemplateURL);
   FRIEND_TEST_ALL_PREFIXES(TemplateURLServiceSyncTest,
@@ -682,6 +683,10 @@ class TemplateURLService : public WebDataServiceConsumer,
   // (3) FindNewDefaultSearchProvider().
   void SetDefaultSearchProviderAfterRemovingDefaultExtension();
 
+  bool ReadDataFromPrefsDictionary(TemplateURL** url);
+
+  void WriteDataToPrefsDictionary(const TemplateURL* url);
+
   content::NotificationRegistrar notification_registrar_;
   PrefChangeRegistrar pref_change_registrar_;