Removing the use of the soon-to-be-removed echo_cancellation_impl

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 397 matching lines @@
     if (err != AudioProcessing::kNoError || !is_component_enabled()) {
       return err;
     }
   }
 
   AllocateRenderQueue();
 
   return AudioProcessing::kNoError;
 }
 
+int EchoCancellationImpl::GetSystemDelayInSamples() const {
+  rtc::CritScope cs(crit_capture_);
+  // Report the delay for the first AEC component.

[the sun, 2016/02/17 11:39:03]

RTC_DCHECK(is_component_enabled()) ?

[peah-webrtc, 2016/03/04 09:46:25]

Done.

+  return WebRtcAec_system_delay(
+      WebRtcAec_aec_core(static_cast<Handle*>(handle(0))));
+}
+
 void EchoCancellationImpl::AllocateRenderQueue() {
   const size_t new_render_queue_element_max_size = std::max<size_t>(
       static_cast<size_t>(1),
       kMaxAllowedValuesOfSamplesPerFrame * num_handles_required());
 
   rtc::CritScope cs_render(crit_render_);
   rtc::CritScope cs_capture(crit_capture_);
 
   // Reallocate the queue if the queue item size is too small to fit the
   // data to put in the queue.
@@ skipping 65 matching lines @@
   // Not locked as it only relies on APM public API which is threadsafe.
   return apm_->num_output_channels() * apm_->num_reverse_channels();
 }
 
 int EchoCancellationImpl::GetHandleError(void* handle) const {
   // Not locked as it does not rely on anything in the state.
   assert(handle != NULL);
   return AudioProcessing::kUnspecifiedError;
 }
 }  // namespace webrtc