Delete a chain of methods in ViE, VoE and ACM

The end goal is to remove AcmReceiver::SetInitialDelay. This change is
in preparation for that goal. It turns out that
AcmReceiver::SetInitialDelay was only invoked through the following
call chain, where each method in the chain is never referenced from
anywhere else (except from tests in some cases):

ViEChannel::SetReceiverBufferingMode
-> ViESyncModule::SetTargetBufferingDelay
-> VoEVideoSync::SetInitialPlayoutDelay
-> Channel::SetInitialPlayoutDelay
-> AudioCodingModule::SetInitialPlayoutDelay
-> AcmReceiver::SetInitialDelay

The start of the chain, ViEChannel::SetReceiverBufferingMode was never
referenced.

This change deletes all the methods above except
AcmReceiver::SetInitialDelay itself, which will be handled in a
follow-up change.

BUG=webrtc:3520

Review URL: https://codereview.webrtc.org/1421013006

Cr-Commit-Position: refs/heads/master@{#10471}

1 files changed, 0 insertions, 14 deletions

diff --git a/webrtc/video_engine/vie_sync_module.cc b/webrtc/video_engine/vie_sync_module.cc
index 1c5d877cd2..e7327eb103 100644
--- a/webrtc/video_engine/vie_sync_module.cc
+++ b/webrtc/video_engine/vie_sync_module.cc
@@ -171,18 +171,4 @@ int32_t ViESyncModule::Process() {
   return 0;
 }
 
-int ViESyncModule::SetTargetBufferingDelay(int target_delay_ms) {
-  CriticalSectionScoped cs(data_cs_.get());
-  if (!voe_sync_interface_) {
-    LOG(LS_ERROR) << "voe_sync_interface_ NULL, can't set playout delay.";
-    return -1;
-  }
-  sync_->SetTargetBufferingDelay(target_delay_ms);
-  // Setting initial playout delay to voice engine (video engine is updated via
-  // the VCM interface).
-  voe_sync_interface_->SetInitialPlayoutDelay(voe_channel_id_,
-                                              target_delay_ms);
-  return 0;
-}
-
 }  // namespace webrtc