Revert of Support external audio mixer.

webrtc/api/peerconnectionfactory.cc

Index: webrtc/api/peerconnectionfactory.cc
diff --git a/webrtc/api/peerconnectionfactory.cc b/webrtc/api/peerconnectionfactory.cc
index 9da6e57f94e6435e23816b2d05af62e4bf268655..e76701e4869d09a8dc6359c076469e975d8305b8 100644
--- a/webrtc/api/peerconnectionfactory.cc
+++ b/webrtc/api/peerconnectionfactory.cc
@@ -57,9 +57,27 @@
     AudioDeviceModule* default_adm,
     cricket::WebRtcVideoEncoderFactory* encoder_factory,
     cricket::WebRtcVideoDecoderFactory* decoder_factory) {
-  return CreatePeerConnectionFactoryWithAudioMixer(
-      network_thread, worker_thread, signaling_thread, default_adm,
-      encoder_factory, decoder_factory, nullptr);
+  rtc::scoped_refptr<PeerConnectionFactory> pc_factory(
+      new rtc::RefCountedObject<PeerConnectionFactory>(
+          network_thread,
+          worker_thread,
+          signaling_thread,
+          default_adm,
+          CreateBuiltinAudioDecoderFactory(),
+          encoder_factory,
+          decoder_factory));
+
+  // Call Initialize synchronously but make sure its executed on
+  // |signaling_thread|.
+  MethodCall0<PeerConnectionFactory, bool> call(
+      pc_factory.get(),
+      &PeerConnectionFactory::Initialize);
+  bool result = call.Marshal(RTC_FROM_HERE, signaling_thread);
+
+  if (!result) {
+    return nullptr;
+  }
+  return PeerConnectionFactoryProxy::Create(signaling_thread, pc_factory);
 }
 
 PeerConnectionFactory::PeerConnectionFactory()
@@ -77,33 +95,6 @@
   worker_thread_->Start();
 }
 
-rtc::scoped_refptr<PeerConnectionFactoryInterface>
-CreatePeerConnectionFactoryWithAudioMixer(
-    rtc::Thread* network_thread,
-    rtc::Thread* worker_thread,
-    rtc::Thread* signaling_thread,
-    AudioDeviceModule* default_adm,
-    cricket::WebRtcVideoEncoderFactory* encoder_factory,
-    cricket::WebRtcVideoDecoderFactory* decoder_factory,
-    rtc::scoped_refptr<AudioMixer> audio_mixer) {
-  rtc::scoped_refptr<PeerConnectionFactory> pc_factory(
-      new rtc::RefCountedObject<PeerConnectionFactory>(
-          network_thread, worker_thread, signaling_thread, default_adm,
-          CreateBuiltinAudioDecoderFactory(), encoder_factory, decoder_factory,
-          audio_mixer));
-
-  // Call Initialize synchronously but make sure it is executed on
-  // |signaling_thread|.
-  MethodCall0<PeerConnectionFactory, bool> call(
-      pc_factory.get(), &PeerConnectionFactory::Initialize);
-  bool result = call.Marshal(RTC_FROM_HERE, signaling_thread);
-
-  if (!result) {
-    return nullptr;
-  }
-  return PeerConnectionFactoryProxy::Create(signaling_thread, pc_factory);
-}
-
 PeerConnectionFactory::PeerConnectionFactory(
     rtc::Thread* network_thread,
     rtc::Thread* worker_thread,
@@ -112,8 +103,7 @@
     const rtc::scoped_refptr<webrtc::AudioDecoderFactory>&
         audio_decoder_factory,
     cricket::WebRtcVideoEncoderFactory* video_encoder_factory,
-    cricket::WebRtcVideoDecoderFactory* video_decoder_factory,
-    rtc::scoped_refptr<AudioMixer> audio_mixer)
+    cricket::WebRtcVideoDecoderFactory* video_decoder_factory)
     : owns_ptrs_(false),
       wraps_current_thread_(false),
       network_thread_(network_thread),
@@ -122,8 +112,7 @@
       default_adm_(default_adm),
       audio_decoder_factory_(audio_decoder_factory),
       video_encoder_factory_(video_encoder_factory),
-      video_decoder_factory_(video_decoder_factory),
-      external_audio_mixer_(audio_mixer) {
+      video_decoder_factory_(video_decoder_factory) {
   RTC_DCHECK(network_thread);
   RTC_DCHECK(worker_thread);
   RTC_DCHECK(signaling_thread);
@@ -347,8 +336,10 @@
 cricket::MediaEngineInterface* PeerConnectionFactory::CreateMediaEngine_w() {
   ASSERT(worker_thread_ == rtc::Thread::Current());
   return cricket::WebRtcMediaEngineFactory::Create(
-      default_adm_.get(), audio_decoder_factory_, video_encoder_factory_.get(),
-      video_decoder_factory_.get(), external_audio_mixer_);
+      default_adm_.get(),
+      audio_decoder_factory_,
+      video_encoder_factory_.get(),
+      video_decoder_factory_.get());
 }
 
 }  // namespace webrtc