Adding WebRTC-in-Chrome test case that includes an SDP offer with B=AS:xx

content/browser/media/webrtc_browsertest.cc

Index: content/browser/media/webrtc_browsertest.cc
diff --git a/content/browser/media/webrtc_browsertest.cc b/content/browser/media/webrtc_browsertest.cc
index f6c89d81362b1c5dbe1c8a27e4c6d74b0c88d335..db3503013c11f22077ecddbfdb46baf7a88e8d72 100644
--- a/content/browser/media/webrtc_browsertest.cc
+++ b/content/browser/media/webrtc_browsertest.cc
@@ -522,6 +522,12 @@ IN_PROC_BROWSER_TEST_F(WebrtcBrowserTest, NegotiateNonCryptoCall) {
   MakeTypicalPeerConnectionCall("negotiateNonCryptoCall();");
 }
 
+// This test can negotiate an SDP offer that includes a b=AS:xx to control
+// the bandwidth for audio and video
+IN_PROC_BROWSER_TEST_F(WebrtcBrowserTest, NegotiateOfferWithBLine) {
+  MakeTypicalPeerConnectionCall("negotiateOfferWithBLine();");
+}
+
 // This test will make a complete PeerConnection-based call using legacy SDP
 // settings: GIce, external SDES, and no BUNDLE.
 #if defined(OS_WIN) && defined(USE_AURA)