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

webrtc/media/base/fakevideocapturer.h

Index: webrtc/media/base/fakevideocapturer.h
diff --git a/webrtc/media/base/fakevideocapturer.h b/webrtc/media/base/fakevideocapturer.h
index 5b6a65cfa4de16bd644ab7988142d1c64b887c1e..ba8f01eddbee28e99710fb82c3a7ad5074b5ff10 100644
--- a/webrtc/media/base/fakevideocapturer.h
+++ b/webrtc/media/base/fakevideocapturer.h
@@ -121,9 +121,6 @@ class FakeVideoCapturer : public cricket::VideoCapturer {
   }
   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);
@@ -136,16 +133,11 @@ class FakeVideoCapturer : public cricket::VideoCapturer {
 
   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_;
 };