Delete a chain of methods in ViE, VoE and ACM

webrtc/modules/audio_coding/main/acm2/audio_coding_module_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 747 matching lines @@
                  "%s failed: No send codec is registered.", caller_name);
     return false;
   }
   return true;
 }
 
 int AudioCodingModuleImpl::UnregisterReceiveCodec(uint8_t payload_type) {
   return receiver_.RemoveCodec(payload_type);
 }
 
-int AudioCodingModuleImpl::SetInitialPlayoutDelay(int delay_ms) {
-  {
-    CriticalSectionScoped lock(acm_crit_sect_.get());
-    // Initialize receiver, if it is not initialized. Otherwise, initial delay
-    // is reset upon initialization of the receiver.
-    if (!receiver_initialized_)
-      InitializeReceiverSafe();
-  }
-  return receiver_.SetInitialDelay(delay_ms);
-}
-
 int AudioCodingModuleImpl::EnableNack(size_t max_nack_list_size) {
   return receiver_.EnableNack(max_nack_list_size);
 }
 
 void AudioCodingModuleImpl::DisableNack() {
   receiver_.DisableNack();
 }
 
 std::vector<uint16_t> AudioCodingModuleImpl::GetNackList(
     int64_t round_trip_time_ms) const {
   return receiver_.GetNackList(round_trip_time_ms);
 }
 
 int AudioCodingModuleImpl::LeastRequiredDelayMs() const {
   return receiver_.LeastRequiredDelayMs();
 }
 
 void AudioCodingModuleImpl::GetDecodingCallStatistics(
       AudioDecodingCallStats* call_stats) const {
   receiver_.GetDecodingCallStatistics(call_stats);
 }
 
 }  // namespace acm2
 }  // namespace webrtc