Rename Beamformer to NonlinearBeamformer.

R=aluebs@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/42359004

Cr-Commit-Position: refs/heads/master@{#8710}
git-svn-id: http://webrtc.googlecode.com/svn/trunk@8710 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/modules/audio_processing/include/audio_processing.h b/webrtc/modules/audio_processing/include/audio_processing.h
index 049cfbb..7c230d3 100644
--- a/webrtc/modules/audio_processing/include/audio_processing.h
+++ b/webrtc/modules/audio_processing/include/audio_processing.h
@@ -25,7 +25,7 @@
 namespace webrtc {
 
 class AudioFrame;
-class Beamformer;
+class NonlinearBeamformer;
 class EchoCancellation;
 class EchoControlMobile;
 class GainControl;
@@ -201,7 +201,8 @@
   // Allows passing in an optional configuration at create-time.
   static AudioProcessing* Create(const Config& config);
   // Only for testing.
-  static AudioProcessing* Create(const Config& config, Beamformer* beamformer);
+  static AudioProcessing* Create(const Config& config,
+                                 NonlinearBeamformer* beamformer);
   virtual ~AudioProcessing() {}
 
   // Initializes internal states, while retaining all user settings. This