Revert of WebRtcVoiceMediaChannel::AddRecvStream: Don't call SetRecPayloadType (patchset #13 id:260001 of https://codereview.webrtc.org/2686043006/ )

Reason for revert:
Makes perf and Chromium FYI bots unhappy.

Original issue's description:
> WebRtcVoiceMediaChannel::AddRecvStream: Don't call SetRecPayloadType
>
> This removes one more place where we were unable to handle codecs not
> in the built-in set.
>
> BUG=webrtc:5805
>
> Review-Url: https://codereview.webrtc.org/2686043006
> Cr-Commit-Position: refs/heads/master@{#17370}
> Committed: 1724cfbdba

TBR=ossu@webrtc.org,solenberg@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:5805

Review-Url: https://codereview.webrtc.org/2772043002
Cr-Commit-Position: refs/heads/master@{#17374}

webrtc/voice_engine/test/auto_test/fakes/conference_transport.cc

@@ -15,8 +15,6 @@
 #include "webrtc/base/byteorder.h"
 #include "webrtc/base/timeutils.h"
 #include "webrtc/system_wrappers/include/sleep.h"
-#include "webrtc/voice_engine/channel_proxy.h"
-#include "webrtc/voice_engine/voice_engine_impl.h"
 
 namespace {
   static const unsigned int kReflectorSsrc = 0x0000;
@@ -64,9 +62,6 @@ ConferenceTransport::ConferenceTransport()
 
   EXPECT_EQ(0, local_base_->Init());
   local_sender_ = local_base_->CreateChannel();
-  static_cast<webrtc::VoiceEngineImpl*>(local_voe_)
-      ->GetChannelProxy(local_sender_)
-      ->RegisterLegacyCodecs();
   EXPECT_EQ(0, local_network_->RegisterExternalTransport(local_sender_, *this));
   EXPECT_EQ(0, local_rtp_rtcp_->SetLocalSSRC(local_sender_, kLocalSsrc));
   EXPECT_EQ(0, local_rtp_rtcp_->
@@ -77,9 +72,6 @@ ConferenceTransport::ConferenceTransport()
 
   EXPECT_EQ(0, remote_base_->Init());
   reflector_ = remote_base_->CreateChannel();
-  static_cast<webrtc::VoiceEngineImpl*>(remote_voe_)
-      ->GetChannelProxy(reflector_)
-      ->RegisterLegacyCodecs();
   EXPECT_EQ(0, remote_network_->RegisterExternalTransport(reflector_, *this));
   EXPECT_EQ(0, remote_rtp_rtcp_->SetLocalSSRC(reflector_, kReflectorSsrc));
 
@@ -230,9 +222,6 @@ void ConferenceTransport::SetRtt(unsigned int rtt_ms) {
 unsigned int ConferenceTransport::AddStream(std::string file_name,
                                             webrtc::FileFormats format) {
   const int new_sender = remote_base_->CreateChannel();
-  static_cast<webrtc::VoiceEngineImpl*>(remote_voe_)
-      ->GetChannelProxy(new_sender)
-      ->RegisterLegacyCodecs();
   EXPECT_EQ(0, remote_network_->RegisterExternalTransport(new_sender, *this));
 
   const unsigned int remote_ssrc = kFirstRemoteSsrc + stream_count_++;
@@ -246,9 +235,6 @@ unsigned int ConferenceTransport::AddStream(std::string file_name,
       new_sender, file_name.c_str(), true, false, format, 1.0));
 
   const int new_receiver = local_base_->CreateChannel();
-  static_cast<webrtc::VoiceEngineImpl*>(local_voe_)
-      ->GetChannelProxy(new_receiver)
-      ->RegisterLegacyCodecs();
   EXPECT_EQ(0, local_base_->AssociateSendChannel(new_receiver, local_sender_));
 
   EXPECT_EQ(0, local_network_->RegisterExternalTransport(new_receiver, *this));

webrtc/voice_engine/test/auto_test/fixtures/after_streaming_fixture.cc

@@ -16,6 +16,5 @@ AfterStreamingFixture::AfterStreamingFixture()
   webrtc::VoiceEngineImpl* voe_impl =
       static_cast<webrtc::VoiceEngineImpl*>(voice_engine_);
   channel_proxy_ = voe_impl->GetChannelProxy(channel_);
-  channel_proxy_->RegisterLegacyCodecs();
   ResumePlaying();
 }

webrtc/voice_engine/test/auto_test/standard/codec_before_streaming_test.cc

@@ -8,9 +8,7 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#include "webrtc/voice_engine/channel_proxy.h"
 #include "webrtc/voice_engine/test/auto_test/fixtures/after_initialization_fixture.h"
-#include "webrtc/voice_engine/voice_engine_impl.h"
 
 class CodecBeforeStreamingTest : public AfterInitializationFixture {
  protected:
@@ -21,9 +19,6 @@ class CodecBeforeStreamingTest : public AfterInitializationFixture {
     codec_instance_.pacsize = 480;
 
     channel_ = voe_base_->CreateChannel();
-    static_cast<webrtc::VoiceEngineImpl*>(voice_engine_)
-        ->GetChannelProxy(channel_)
-        ->RegisterLegacyCodecs();
   }
 
   void TearDown() {