Remove CommandLine dependency from the Linux's AudioCapturer.

remoting/host/audio_capturer.h

Index: remoting/host/audio_capturer.h
diff --git a/remoting/host/audio_capturer.h b/remoting/host/audio_capturer.h
index 570d58563d960815c834fc937a24eadca5215377..4cd8c9eab3a18438375a833465908b6bff558b56 100644
--- a/remoting/host/audio_capturer.h
+++ b/remoting/host/audio_capturer.h
@@ -11,6 +11,7 @@
 namespace remoting {
 
 class AudioPacket;
+class ChromotingHostContext;
 
 class AudioCapturer {
  public:
@@ -21,8 +22,8 @@ class AudioCapturer {
 
   // Returns true if audio capturing is supported on this platform. If this
   // returns true, then Create() must not return NULL.
-  static bool IsSupported();
-  static scoped_ptr<AudioCapturer> Create();
+  static bool IsSupported(ChromotingHostContext* context);
+  static scoped_ptr<AudioCapturer> Create(ChromotingHostContext* context);
 
   // Capturers should sample at a 44.1 or 48 kHz sampling rate, in uncompressed
   // PCM stereo format. Capturers may choose the number of frames per packet.