Added a query function for whether submodules are enabled

webrtc/modules/audio_processing/echo_cancellation_impl.cc

 /*
  *  Copyright (c) 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 257 matching lines @@
     Initialize(stream_properties_->sample_rate_hz,
                stream_properties_->num_reverse_channels,
                stream_properties_->num_output_channels,
                stream_properties_->num_proc_channels);
   } else {
     enabled_ = enable;
   }
   return AudioProcessing::kNoError;
 }
 
+bool EchoCancellationImpl::is_enabled_render_side_query() const {
+  // TODO(peah): Add threadchecker.
+  rtc::CritScope cs_render(crit_render_);
+  return enabled_;
+}
+
 bool EchoCancellationImpl::is_enabled() const {
   rtc::CritScope cs(crit_capture_);
   return enabled_;
 }
 
 int EchoCancellationImpl::set_suppression_level(SuppressionLevel level) {
   {
     if (MapSetting(level) == -1) {
       return AudioProcessing::kBadParameterError;
     }
@@ skipping 264 matching lines @@
   return error;
 }
 
 size_t EchoCancellationImpl::NumCancellersRequired() const {
   RTC_DCHECK(stream_properties_);
   return stream_properties_->num_output_channels *
          stream_properties_->num_reverse_channels;
 }
 
 }  // namespace webrtc