--- a/media/webrtc/signaling/gtest/jsep_session_unittest.cpp
+++ b/media/webrtc/signaling/gtest/jsep_session_unittest.cpp
@@ -2948,17 +2948,16 @@ INSTANTIATE_TEST_CASE_P(
 
 // offerToReceiveXxx variants
 
 TEST_F(JsepSessionTest, OfferAnswerRecvOnlyLines)
 {
   JsepOfferOptions options;
   options.mOfferToReceiveAudio = Some(static_cast<size_t>(1U));
   options.mOfferToReceiveVideo = Some(static_cast<size_t>(2U));
-  options.mDontOfferDataChannel = Some(true);
   std::string offer = CreateOffer(Some(options));
 
   UniquePtr<Sdp> parsedOffer(Parse(offer));
   ASSERT_TRUE(!!parsedOffer);
 
   ASSERT_EQ(3U, parsedOffer->GetMediaSectionCount());
   ASSERT_EQ(SdpMediaSection::kAudio,
             parsedOffer->GetMediaSection(0).GetMediaType());
@@ -3025,17 +3024,16 @@ TEST_F(JsepSessionTest, OfferAnswerRecvO
 
 TEST_F(JsepSessionTest, OfferAnswerSendOnlyLines)
 {
   AddTracks(*mSessionOff, "audio,video,video");
 
   JsepOfferOptions options;
   options.mOfferToReceiveAudio = Some(static_cast<size_t>(0U));
   options.mOfferToReceiveVideo = Some(static_cast<size_t>(1U));
-  options.mDontOfferDataChannel = Some(true);
   std::string offer = CreateOffer(Some(options));
 
   UniquePtr<Sdp> outputSdp(Parse(offer));
   ASSERT_TRUE(!!outputSdp);
 
   ASSERT_EQ(3U, outputSdp->GetMediaSectionCount());
   ASSERT_EQ(SdpMediaSection::kAudio,
             outputSdp->GetMediaSection(0).GetMediaType());

--- a/media/webrtc/signaling/src/jsep/JsepSession.h
+++ b/media/webrtc/signaling/src/jsep/JsepSession.h
@@ -44,17 +44,16 @@ enum JsepDescriptionPendingOrCurrent {
   kJsepDescriptionPending,
   kJsepDescriptionPendingOrCurrent
 };
 
 struct JsepOAOptions {};
 struct JsepOfferOptions : public JsepOAOptions {
   Maybe<size_t> mOfferToReceiveAudio;
   Maybe<size_t> mOfferToReceiveVideo;
-  Maybe<bool> mDontOfferDataChannel;
   Maybe<bool> mIceRestart; // currently ignored by JsepSession
 };
 struct JsepAnswerOptions : public JsepOAOptions {};
 
 enum JsepBundlePolicy {
   kBundleBalanced,
   kBundleMaxCompat,
   kBundleMaxBundle

--- a/media/webrtc/signaling/src/jsep/JsepSessionImpl.cpp
+++ b/media/webrtc/signaling/src/jsep/JsepSessionImpl.cpp
@@ -423,23 +423,20 @@ JsepSessionImpl::SetupOfferMSections(con
 
   NS_ENSURE_SUCCESS(rv, rv);
 
   rv = SetupOfferMSectionsByType(
       SdpMediaSection::kVideo, options.mOfferToReceiveVideo, sdp);
 
   NS_ENSURE_SUCCESS(rv, rv);
 
-  if (!(options.mDontOfferDataChannel.isSome() &&
-        *options.mDontOfferDataChannel)) {
-    rv = SetupOfferMSectionsByType(
-        SdpMediaSection::kApplication, Maybe<size_t>(), sdp);
-
-    NS_ENSURE_SUCCESS(rv, rv);
-  }
+  rv = SetupOfferMSectionsByType(
+      SdpMediaSection::kApplication, Maybe<size_t>(), sdp);
+
+  NS_ENSURE_SUCCESS(rv, rv);
 
   if (!sdp->GetMediaSectionCount()) {
     JSEP_SET_ERROR("Cannot create an offer with no local tracks, "
                    "no offerToReceiveAudio/Video, and no DataChannel.");
     return NS_ERROR_INVALID_ARG;
   }
 
   return NS_OK;

--- a/media/webrtc/signaling/src/peerconnection/PeerConnectionImpl.cpp
+++ b/media/webrtc/signaling/src/peerconnection/PeerConnectionImpl.cpp
@@ -1456,20 +1456,16 @@ PeerConnectionImpl::CreateOffer(const RT
 
   if (aOptions.mOfferToReceiveVideo.WasPassed()) {
     options.mOfferToReceiveVideo =
         mozilla::Some(size_t(aOptions.mOfferToReceiveVideo.Value()));
   }
 
   options.mIceRestart = mozilla::Some(aOptions.mIceRestart);
 
-  if (aOptions.mMozDontOfferDataChannel.WasPassed()) {
-    options.mDontOfferDataChannel =
-      mozilla::Some(aOptions.mMozDontOfferDataChannel.Value());
-  }
   return CreateOffer(options);
 }
 
 static void DeferredCreateOffer(const std::string& aPcHandle,
                                 const JsepOfferOptions& aOptions) {
   PeerConnectionWrapper wrapper(aPcHandle);
 
   if (wrapper.impl()) {