Convert implicit scoped_refptr constructor calls to explicit ones, part 1

chrome/browser/first_run/first_run.cc

Index: chrome/browser/first_run/first_run.cc
diff --git a/chrome/browser/first_run/first_run.cc b/chrome/browser/first_run/first_run.cc
index 54f030ed7e603f6eb0daf5c30512a4ac41d8c14d..525c091ef4b81b6b24af74973fab76703c6d68af 100644
--- a/chrome/browser/first_run/first_run.cc
+++ b/chrome/browser/first_run/first_run.cc
@@ -405,7 +405,7 @@ int FirstRun::ImportFromFile(Profile* profile, const CommandLine& cmdline) {
     NOTREACHED();
     return false;
   }
-  scoped_refptr<ImporterHost> importer_host = new ImporterHost();
+  scoped_refptr<ImporterHost> importer_host(new ImporterHost());
   FirstRunImportObserver observer;
 
   importer_host->set_headless();