Make extensions DSE persistent in browser prefs

chrome/browser/search_engines/template_url_service_test_util.h

Index: chrome/browser/search_engines/template_url_service_test_util.h
diff --git a/chrome/browser/search_engines/template_url_service_test_util.h b/chrome/browser/search_engines/template_url_service_test_util.h
index 566fb9215b536f1128a7ca0eb5b14ec9713568fa..bda85fc7903d8c552d6e3358b216f2304e5e094b 100644
--- a/chrome/browser/search_engines/template_url_service_test_util.h
+++ b/chrome/browser/search_engines/template_url_service_test_util.h
@@ -12,6 +12,7 @@
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/strings/string16.h"
+#include "components/search_engines/template_url.h"
 #include "components/search_engines/template_url_data.h"
 #include "components/search_engines/template_url_service_observer.h"
 
@@ -65,6 +66,22 @@ class TemplateURLServiceTestUtil : public TemplateURLServiceObserver {
   // Sets the google base url.  |base_url| must be valid.
   void SetGoogleBaseURL(const GURL& base_url);
 
+  // Write default search engine into extension controlled preference in test
+  // profile.
+  void SetExtensionDefaultSearchInPrefs(const std::string& ext_id,
+                                        const TemplateURLData& ext_data);
+  // Remove extension controlled default search engine preference from test
+  // profile.
+  void RemoveExtensionDefaultSearchFromPrefs(const std::string& ext_id);
+
+  // Add extension turl to model and override default search preference if
+  // extension wants to be default.
+  TemplateURL* AddExtensionControlledTURL(
+      std::unique_ptr<TemplateURL> ext_dse,
+      std::unique_ptr<TemplateURL::AssociatedExtensionInfo> ext_info);
+  // Remove extension turl from preferences and model.
+  void RemoveExtensionControlledTURL(const std::string& ext_id);
+
   KeywordWebDataService* web_data_service() { return web_data_service_.get(); }
   TemplateURLService* model() { return model_.get(); }
   TestingProfile* profile() { return profile_.get(); }