Add an interface for accepting keypress signals to AudioProcessing.

R=aluebs@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/8429004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@5529 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/modules/audio_processing/audio_processing_impl.h b/webrtc/modules/audio_processing/audio_processing_impl.h
index 249b789..3b46ba8 100644
--- a/webrtc/modules/audio_processing/audio_processing_impl.h
+++ b/webrtc/modules/audio_processing/audio_processing_impl.h
@@ -76,6 +76,8 @@
   virtual int stream_delay_ms() const OVERRIDE;
   virtual void set_delay_offset_ms(int offset) OVERRIDE;
   virtual int delay_offset_ms() const OVERRIDE;
+  virtual void set_stream_key_pressed(bool key_pressed) OVERRIDE;
+  virtual bool stream_key_pressed() const OVERRIDE;
   virtual int StartDebugRecording(
       const char filename[kMaxFilenameSize]) OVERRIDE;
   virtual int StartDebugRecording(FILE* handle) OVERRIDE;
@@ -134,6 +136,8 @@
   int num_reverse_channels_;
   int num_input_channels_;
   int num_output_channels_;
+
+  bool key_pressed_;
 };
 }  // namespace webrtc