Set actual transport overhead in rtp_rtcp

webrtc/modules/rtp_rtcp/test/testAPI/test_api.cc

Index: webrtc/modules/rtp_rtcp/test/testAPI/test_api.cc
diff --git a/webrtc/modules/rtp_rtcp/test/testAPI/test_api.cc b/webrtc/modules/rtp_rtcp/test/testAPI/test_api.cc
index d1e520de8fc8026db6beab86e6aa169676b0c901..576557f32e015793c59367729ea37613d31cb548 100644
--- a/webrtc/modules/rtp_rtcp/test/testAPI/test_api.cc
+++ b/webrtc/modules/rtp_rtcp/test/testAPI/test_api.cc
@@ -140,6 +140,11 @@ TEST_F(RtpRtcpAPITest, MTU) {
 
   EXPECT_EQ(0, module_->SetTransportOverhead(false, false, 0));
   EXPECT_EQ(1234 - 20 - 8, module_->MaxPayloadLength());
+
+  module_->SetTransportOverhead(28);
+  EXPECT_EQ(1234 - 28, module_->MaxPayloadLength());
+  module_->SetTransportOverhead(44);
+  EXPECT_EQ(1234 - 44, module_->MaxPayloadLength());
 }
 
 TEST_F(RtpRtcpAPITest, SSRC) {