Refactoring and tests for the highly undertested file_util::CreateOrUpdateShortcutLink() method.

net/url_request/url_request_file_job.cc

Index: net/url_request/url_request_file_job.cc
diff --git a/net/url_request/url_request_file_job.cc b/net/url_request/url_request_file_job.cc
index 5f33508cb16a9f768532e05ac74df6887a26e929..90512dc90472318aaca01e3ba1506c1df3372471 100644
--- a/net/url_request/url_request_file_job.cc
+++ b/net/url_request/url_request_file_job.cc
@@ -38,6 +38,10 @@
 #include "net/url_request/url_request_error_job.h"
 #include "net/url_request/url_request_file_dir_job.h"
 
+#if defined(OS_WIN)
+#include "base/win/shortcut.h"
+#endif
+
 namespace net {
 
 class URLRequestFileJob::AsyncResolver
@@ -201,7 +205,7 @@ bool URLRequestFileJob::IsRedirectResponse(GURL* location,
 
   FilePath new_path = file_path_;
   bool resolved;
-  resolved = file_util::ResolveShortcut(new_path, &new_path, NULL);
+  resolved = base::win::ResolveShortcut(new_path, &new_path, NULL);
 
   // If shortcut is not resolved succesfully, do not redirect.
   if (!resolved)