Revert of Add method cricket::VideoCapturer::NeedsDenoising, use in VideoCapturerTrackSource.

webrtc/media/base/fakevideocapturer.h

 /*
  *  Copyright (c) 2004 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 103 matching lines @@
     SetCaptureState(cricket::CS_RUNNING);
     return cricket::CS_RUNNING;
   }
   void Stop() override {
     running_ = false;
     SetCaptureFormat(NULL);
     SetCaptureState(cricket::CS_STOPPED);
   }
   bool IsRunning() override { return running_; }
   bool IsScreencast() const override { return is_screencast_; }
-  rtc::Optional<bool> NeedsDenoising() const override {
-    return needs_denoising_;
-  }
   bool GetPreferredFourccs(std::vector<uint32_t>* fourccs) override {
     fourccs->push_back(cricket::FOURCC_I420);
     fourccs->push_back(cricket::FOURCC_MJPG);
     return true;
   }
 
   void SetRotation(webrtc::VideoRotation rotation) {
     rotation_ = rotation;
   }
 
   webrtc::VideoRotation GetRotation() { return rotation_; }
 
-  void SetNeedsDenoising(rtc::Optional<bool> needs_denoising) {
-    needs_denoising_ = needs_denoising;
-  }
-
  private:
   bool running_;
   int64_t initial_timestamp_;
   int64_t next_timestamp_;
   const bool is_screencast_;
-  rtc::Optional<bool> needs_denoising_;
   webrtc::VideoRotation rotation_;
 };
 
 }  // namespace cricket
 
 #endif  // WEBRTC_MEDIA_BASE_FAKEVIDEOCAPTURER_H_