Removed double-special-casing of ISAC in libjingle and WebRtcVoE.

webrtc/media/engine/webrtcvoiceengine_unittest.cc

 /*
  *  Copyright (c) 2008 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 1870 matching lines @@
     EXPECT_STREQ("ISAC", gcodec.plname);
     EXPECT_EQ(32000, gcodec.rate);
   }
 
   parameters.codecs[0].bitrate = 0;         // bitrate == default
   SetSendParameters(parameters);
   {
     const auto& gcodec = GetSendStreamConfig(kSsrc1).send_codec_spec.codec_inst;
     EXPECT_EQ(103, gcodec.pltype);
     EXPECT_STREQ("ISAC", gcodec.plname);
-    EXPECT_EQ(-1, gcodec.rate);
+    EXPECT_EQ(32000, gcodec.rate);
   }
   parameters.codecs[0].bitrate = 28000;     // bitrate == 28000
   SetSendParameters(parameters);
   {
     const auto& gcodec = GetSendStreamConfig(kSsrc1).send_codec_spec.codec_inst;
     EXPECT_EQ(103, gcodec.pltype);
     EXPECT_STREQ("ISAC", gcodec.plname);
     EXPECT_EQ(28000, gcodec.rate);
   }
 
@@ skipping 1772 matching lines @@
       nullptr, webrtc::CreateBuiltinAudioDecoderFactory(), nullptr);
   webrtc::RtcEventLogNullImpl event_log;
   std::unique_ptr<webrtc::Call> call(
       webrtc::Call::Create(webrtc::Call::Config(&event_log)));
   cricket::WebRtcVoiceMediaChannel channel(&engine, cricket::MediaConfig(),
                                            cricket::AudioOptions(), call.get());
   cricket::AudioRecvParameters parameters;
   parameters.codecs = engine.recv_codecs();
   EXPECT_TRUE(channel.SetRecvParameters(parameters));
 }