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

webrtc/media/engine/webrtcvoiceengine_unittest.cc

Index: webrtc/media/engine/webrtcvoiceengine_unittest.cc
diff --git a/webrtc/media/engine/webrtcvoiceengine_unittest.cc b/webrtc/media/engine/webrtcvoiceengine_unittest.cc
index 60389342a896d7da4aff8079b5be98ff1916afe7..eb6f606cf276b0ec9a6b50b004036e43726a43bb 100644
--- a/webrtc/media/engine/webrtcvoiceengine_unittest.cc
+++ b/webrtc/media/engine/webrtcvoiceengine_unittest.cc
@@ -1888,7 +1888,7 @@ TEST_F(WebRtcVoiceEngineTestFake, SetSendCodecsBitrate) {
     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);