Add FilePath to base namespace.

chrome/test/logging/win/log_file_reader.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.
 
 // A log file reader can read log files produced by Event Tracing for Windows
 // (by way of the FileLogger class) that contain events generated from a select
 // few supported providers; see file_logger_win.h for the list.
 
 #ifndef CHROME_TEST_LOGGING_WIN_LOG_FILE_READER_H_
 #define CHROME_TEST_LOGGING_WIN_LOG_FILE_READER_H_
 
 #include <stddef.h>
 #include <windows.h>
 #include <wmistr.h>
 #include <evntrace.h>
 
 #include "base/logging.h"
 #include "base/string_piece.h"
 
+namespace base {
 class FilePath;
+}
 
 namespace logging_win {
 
 // An interface to classes interested in taking action based on events parsed
 // out of a log file created by the FileLogger.
 class LogFileDelegate {
  public:
   virtual ~LogFileDelegate();
 
   // Invoked for event types not currently handled by the parser.
@@ skipping 31 matching lines @@
                             const intptr_t* backtrace) = 0;
 
  protected:
   LogFileDelegate();
 };
 
 // Reads |log_file|, invoking appropriate methods on |delegate| as events are
 // parsed.  Although it is safe to call this from multiple threads, only one
 // file may be read at a time; other threads trying to read other log files will
 // be blocked waiting.
-void ReadLogFile(const FilePath& log_file, LogFileDelegate* delegate);
+void ReadLogFile(const base::FilePath& log_file, LogFileDelegate* delegate);
 
 }  // namespace logging_win
 
 #endif  // CHROME_TEST_LOGGING_WIN_LOG_FILE_READER_H_