If the URL text has no scheme, and starts with ftp., then ...

chrome/browser/url_fixer_upper_unittest.cc

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stdlib.h>
 #include <windows.h>
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "base/path_service.h"
@@ skipping 155 matching lines @@
   {L"www.google.com#foo", L"", L"http://www.google.com/#foo"},
   {L"www.google.com?", L"", L"http://www.google.com/?"},
   {L"www.google.com#", L"", L"http://www.google.com/#"},
   {L"www.google.com:123?foo#bar", L"", L"http://www.google.com:123/?foo#bar"},
   {L"user@www.google.com", L"", L"http://user@www.google.com/"},
   {L"\x6C34.com", L"", L"http://\x6C34.com/" },
   // It would be better if this next case got treated as http, but I don't see
   // a clean way to guess this isn't the new-and-exciting "user" scheme.
   {L"user:passwd@www.google.com:8080/", L"", L"user:passwd@www.google.com:8080/"},
   //{L"file:///c:/foo/bar%20baz.txt", L"", L"file:///C:/foo/bar%20baz.txt"},
+  {L"ftp.google.com", L"", L"ftp://ftp.google.com/"},
+  {L"    ftp.google.com", L"", L"ftp://ftp.google.com/"},
+  {L"FTP.GooGle.com", L"", L"ftp://FTP.GooGle.com/"},
+  {L"ftpblah.google.com", L"", L"http://ftpblah.google.com/"},
+  {L"ftp", L"", L"http://ftp/"},
+  {L"google.ftp.com", L"", L"http://google.ftp.com/"},
 };
 
 TEST(URLFixerUpperTest, FixupURL) {
   std::wstring output;
 
   for (int i = 0; i < arraysize(fixup_cases); ++i) {
     fixup_case value = fixup_cases[i];
     output = URLFixerUpper::FixupURL(value.input, value.desired_tld);
     EXPECT_EQ(value.output, output);
   }
@@ skipping 133 matching lines @@
   // (should resolve to the same file as above)
   relative_file = sub_dir + L"\\../" + sub_dir  + L"\\\\\\.\\" + sub_file;
   fixedup = URLFixerUpper::FixupRelativeFile(dir, relative_file);
   EXPECT_PRED2(IsMatchingFileURL, fixedup, full_path);
 
   // done with the subdir
   EXPECT_TRUE(DeleteFile(full_path.c_str()));
   EXPECT_TRUE(RemoveDirectory(new_dir.c_str()));
 }