Add FilePath to base namespace.

net/test/python_utils.h

 // Copyright (c) 2010 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_PYTHON_UTILS_H_
 #define NET_TEST_PYTHON_UTILS_H_
 
 #include "base/compiler_specific.h"
 
 class CommandLine;
+
+namespace base {
 class FilePath;
+}
 
 // This is the python path variable name.
 extern const char kPythonPathEnv[];
 
 // Appends the dir to python path environment variable.
-void AppendToPythonPath(const FilePath& dir);
+void AppendToPythonPath(const base::FilePath& dir);
 
 // Return the location of the compiler-generated python protobuf.
-bool GetPyProtoPath(FilePath* dir);
+bool GetPyProtoPath(base::FilePath* dir);
 
 // Returns the command that should be used to launch Python.
 bool GetPythonCommand(CommandLine* python_cmd) WARN_UNUSED_RESULT;
 
 #endif  // NET_TEST_PYTHON_UTILS_H_