Add FilePath to base namespace.

remoting/host/audio_capturer_linux.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 REMOTING_HOST_AUDIO_CAPTURER_LINUX_H_
 #define REMOTING_HOST_AUDIO_CAPTURER_LINUX_H_
 
 #include "base/memory/ref_counted.h"
 #include "remoting/host/audio_capturer.h"
 #include "remoting/host/audio_silence_detector.h"
 #include "remoting/host/linux/audio_pipe_reader.h"
 
+namespace base {
 class FilePath;
+}
 
 namespace remoting {
 
 // Linux implementation of AudioCapturer interface which captures audio by
 // reading samples from a Pulseaudio "pipe" sink.
 class AudioCapturerLinux : public AudioCapturer,
                            public AudioPipeReader::StreamObserver {
  public:
   // Must be called to configure the capturer before the first capturer instance
   // is created. |task_runner| is an IO thread that is passed to AudioPipeReader
   // to read from the pipe.
   static void InitializePipeReader(
       scoped_refptr<base::SingleThreadTaskRunner> task_runner,
-      const FilePath& pipe_name);
+      const base::FilePath& pipe_name);
 
   explicit AudioCapturerLinux(
       scoped_refptr<AudioPipeReader> pipe_reader);
   virtual ~AudioCapturerLinux();
 
   // AudioCapturer interface.
   virtual bool Start(const PacketCapturedCallback& callback) OVERRIDE;
   virtual void Stop() OVERRIDE;
   virtual bool IsStarted() OVERRIDE;
 
   // AudioPipeReader::StreamObserver interface.
   virtual void OnDataRead(scoped_refptr<base::RefCountedString> data) OVERRIDE;
 
  private:
   scoped_refptr<AudioPipeReader> pipe_reader_;
   PacketCapturedCallback callback_;
 
   AudioSilenceDetector silence_detector_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioCapturerLinux);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_AUDIO_CAPTURER_LINUX_H_