Protector histograms for default search provider change added.

chrome/browser/search_engines/template_url_prepopulate_data.cc

Index: chrome/browser/search_engines/template_url_prepopulate_data.cc
diff --git a/chrome/browser/search_engines/template_url_prepopulate_data.cc b/chrome/browser/search_engines/template_url_prepopulate_data.cc
index 66ec20b237ab0ccadbce5a66853f7fa18fc97598..e69a35ceae3f8f16fd28ed8d6ab082424f2eab37 100644
--- a/chrome/browser/search_engines/template_url_prepopulate_data.cc
+++ b/chrome/browser/search_engines/template_url_prepopulate_data.cc
@@ -3590,4 +3590,12 @@ int GetSearchEngineLogo(const GURL& url_to_find) {
   return kNoSearchEngineLogo;
 }
 
+TemplateURL* FindPrepopulatedEngine(const std::string& search_url) {
+  for (size_t i = 0; i < arraysize(kAllEngines); ++i) {
+    if (search_url == ToUTF8(kAllEngines[i]->search_url))
+      return MakePrepopulateTemplateURLFromPrepopulateEngine(*kAllEngines[i]);
+  }
+  return NULL;
+}
+
 }  // namespace TemplateURLPrepopulateData