Delete unused methods of the VideoProcessing class. And fix a typo.

webrtc/modules/video_processing/frame_preprocessor.cc

Index: webrtc/modules/video_processing/frame_preprocessor.cc
diff --git a/webrtc/modules/video_processing/frame_preprocessor.cc b/webrtc/modules/video_processing/frame_preprocessor.cc
index c2042148a2afc07029351790d923eed0e1a46df0..63a018f9acaf195101b3ec68b1f36622f1cd84d8 100644
--- a/webrtc/modules/video_processing/frame_preprocessor.cc
+++ b/webrtc/modules/video_processing/frame_preprocessor.cc
@@ -22,7 +22,7 @@ VPMFramePreprocessor::VPMFramePreprocessor()
   spatial_resampler_ = new VPMSimpleSpatialResampler();
   ca_ = new VPMContentAnalysis(true);
   vd_ = new VPMVideoDecimator();
-  EnableDenosing(false);
+  EnableDenoising(false);
   denoised_frame_toggle_ = 0;
 }
 
@@ -96,7 +96,7 @@ uint32_t VPMFramePreprocessor::GetDecimatedHeight() const {
   return spatial_resampler_->TargetHeight();
 }
 
-void VPMFramePreprocessor::EnableDenosing(bool enable) {
+void VPMFramePreprocessor::EnableDenoising(bool enable) {
   if (enable) {
     denoiser_.reset(new VideoDenoiser(true));
   } else {