Fix the failed cases in URLFetcherFileTest on Android.

net/test/remote_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_REMOTE_TEST_SERVER_H_
 #define NET_TEST_REMOTE_TEST_SERVER_H_
 
 #include <string>
 
 #include "net/test/base_test_server.h"
@@ skipping 19 matching lines @@
                    const FilePath& document_root);
 
   virtual ~RemoteTestServer();
 
   // Starts the Python test server on the host, instead of on the device.
   bool Start() WARN_UNUSED_RESULT;
 
   // Stops the Python test server that is running on the host machine.
   bool Stop();
 
+  FilePath GetDocumentRoot() const;

[wtc, 2012/10/23 18:28:31]

Please document this function. In particular, explain when
to use document_root() and when to use this function.

[Shouqun Liu, 2012/10/24 02:32:47]

Done.

+
  private:
   bool Init(const FilePath& document_root);
 
   // The local port used to communicate with the TestServer spawner. This is
   // used to control the startup and shutdown of the Python TestServer running
   // on the remote machine. On Android, this port will be redirected to the
   // same port on the host machine.
   int spawner_server_port_;
 
   // Helper to start and stop instances of the Python test server that runs on
   // the host machine.
   scoped_ptr<SpawnerCommunicator> spawner_communicator_;
 
   DISALLOW_COPY_AND_ASSIGN(RemoteTestServer);
 };
 
 }  // namespace net
 
 #endif  // NET_TEST_REMOTE_TEST_SERVER_H_