Modify TemplateURLRef to remove unknown URL parameters, but only when it represents a prepopulate...

chrome/browser/search_engines/template_url_service.cc

Index: chrome/browser/search_engines/template_url_service.cc
===================================================================
--- chrome/browser/search_engines/template_url_service.cc	(revision 90805)
+++ chrome/browser/search_engines/template_url_service.cc	(working copy)
@@ -891,7 +891,7 @@
   if (!prepopulate_id.empty() && !*is_managed) {
     int value;
     base::StringToInt(prepopulate_id, &value);
-    (*default_provider)->set_prepopulate_id(value);
+    (*default_provider)->SetPrepopulateId(value);
   }
   (*default_provider)->set_show_in_default_list(true);
   return true;