Minor fix to avoid breakage

Related to AutoMute feature. Fixed a lint nit, too.

TBR=mflodman@webrtc.org
BUG=2436

Review URL: https://webrtc-codereview.appspot.com/2347004

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@4910 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/video_engine/include/vie_codec.h b/video_engine/include/vie_codec.h
index 017bedf..976aee7 100644
--- a/video_engine/include/vie_codec.h
+++ b/video_engine/include/vie_codec.h
@@ -39,7 +39,7 @@
   // This method is called whenever the state of the AutoMuter changes, i.e.,
   // when |is_muted| toggles.
   // TODO(hlundin): Remove the default implementation when possible.
-  virtual void VideoAutoMuted(bool is_muted) {};
+  virtual void VideoAutoMuted(bool is_muted) {}
 
  protected:
   virtual ~ViEEncoderObserver() {}
@@ -187,8 +187,9 @@
   // |threshold_bps|, and turns back on when the rate goes back up above
   // |threshold_bps| + |window_bps|.
   // This is under development; not tested.
+  // TODO(hlundin): Remove the default implementation when possible.
   virtual void EnableAutoMuting(int video_channel, int threshold_bps,
-                                int window_bps) = 0;
+                                int window_bps) {}
 
  protected:
   ViECodec() {}