Fix the failed cases in URLFetcherFileTest on Android.

net/test/local_test_server.h

 // 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.
 
 #ifndef NET_TEST_LOCAL_TEST_SERVER_H_
 #define NET_TEST_LOCAL_TEST_SERVER_H_
 
 #include <string>
 
 #include "base/file_util.h"
@@ skipping 35 matching lines @@
   static bool SetPythonPath() WARN_UNUSED_RESULT;
 
   // Returns true if successfully stored the FilePath for the directory of the
   // testserver python script in |*directory|.
   static bool GetTestServerDirectory(FilePath* directory) WARN_UNUSED_RESULT;
 
   // Adds the command line arguments for the Python test server to
   // |command_line|. Returns true on success.
   virtual bool AddCommandLineArguments(CommandLine* command_line) const;
 
+  // Returns the actual path of document root for test cases. This function
+  // should be called by test cases to retrieve the actual document root path.
+  FilePath GetDocumentRoot() const { return document_root(); };
+
  private:
   bool Init(const FilePath& document_root);
 
   // Launches the Python test server. Returns true on success.
   bool LaunchPython(const FilePath& testserver_path) WARN_UNUSED_RESULT;
 
   // Waits for the server to start. Returns true on success.
   bool WaitToStart() WARN_UNUSED_RESULT;
 
   // Handle of the Python process running the test server.
@@ skipping 15 matching lines @@
   int child_fd_;
   file_util::ScopedFD child_fd_closer_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(LocalTestServer);
 };
 
 }  // namespace net
 
 #endif  // NET_TEST_LOCAL_TEST_SERVER_H_