Make the TestServer use an absolute document root path.

chrome/browser/net/ftp_browsertest.cc

 // Copyright (c) 2012 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 "chrome/test/base/in_process_browser_test.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "googleurl/src/gurl.h"
 #include "net/test/test_server.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 class FtpBrowserTest : public InProcessBrowserTest {
  public:
   FtpBrowserTest()
       : ftp_server_(net::TestServer::TYPE_FTP,
                     net::TestServer::kLocalhost,
-                    base::FilePath()) {
+                    net::TestServer::GetSourcePath()) {
   }
 
  protected:
   net::TestServer ftp_server_;
 };
 
 IN_PROC_BROWSER_TEST_F(FtpBrowserTest, DirectoryListing) {
   ASSERT_TRUE(ftp_server_.Start());
   ui_test_utils::NavigateToURL(browser(), ftp_server_.GetURL("/"));
   // TODO(phajdan.jr): test more things.
 }