Change VideoSourceInterface::needs_denoising() to return rtc::Optional<bool>

webrtc/api/videocapturertracksource.cc

 /*
  *  Copyright 2012 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 222 matching lines @@
       best_it = it;
     }
   }
   return *best_it;
 }
 
 // Set |option| to the highest-priority value of |key| in the constraints.
 // Return false if the key is mandatory, and the value is invalid.
 bool ExtractOption(const MediaConstraintsInterface* all_constraints,
                    const std::string& key,
-                   bool* option) {
+                   rtc::Optional<bool>* option) {
   size_t mandatory = 0;
-  *option = false;
-  if (FindConstraint(all_constraints, key, option, &mandatory)) {
+  bool value;
+  if (FindConstraint(all_constraints, key, &value, &mandatory)) {
+    *option = rtc::Optional<bool>(value);
     return true;
   }
 
   return mandatory == 0;
 }
 
 }  // anonymous namespace
 
 namespace webrtc {
 
@@ skipping 24 matching lines @@
   return source;
 }
 
 VideoCapturerTrackSource::VideoCapturerTrackSource(
     rtc::Thread* worker_thread,
     cricket::VideoCapturer* capturer,
     bool remote)
     : VideoTrackSource(capturer, worker_thread, remote),
       signaling_thread_(rtc::Thread::Current()),
       video_capturer_(capturer),
-      started_(false),
-      needs_denoising_(false) {
+      started_(false) {
   video_capturer_->SignalStateChange.connect(
       this, &VideoCapturerTrackSource::OnStateChange);
 }
 
 VideoCapturerTrackSource::~VideoCapturerTrackSource() {
   video_capturer_->SignalStateChange.disconnect(this);
   Stop();
 }
 
 void VideoCapturerTrackSource::Initialize(
@@ skipping 89 matching lines @@
                                      this, capturer, capture_state));
     return;
   }
 
   if (capturer == video_capturer_.get()) {
     SetState(GetReadyState(capture_state));
   }
 }
 
 }  // namespace webrtc