Delete deprecated CreateAudioSource method, with constraints.

Bug: webrtc:9239
Change-Id: I5025b7fd103247e0426ceabedc1216a4f0f0ab34
Reviewed-on: https://webrtc-review.googlesource.com/76560
Commit-Queue: Niels Moller <nisse@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Reviewed-by: Taylor Brandstetter <deadbeef@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23501}
diff --git a/pc/peerconnection_integrationtest.cc b/pc/peerconnection_integrationtest.cc
index ec7f5c1..ecd84d1 100644
--- a/pc/peerconnection_integrationtest.cc
+++ b/pc/peerconnection_integrationtest.cc
@@ -321,11 +321,11 @@
   }
 
   rtc::scoped_refptr<webrtc::AudioTrackInterface> CreateLocalAudioTrack() {
-    FakeConstraints constraints;
+    cricket::AudioOptions options;
     // Disable highpass filter so that we can get all the test audio frames.
-    constraints.AddMandatory(MediaConstraintsInterface::kHighpassFilter, false);
+    options.highpass_filter = false;
     rtc::scoped_refptr<webrtc::AudioSourceInterface> source =
-        peer_connection_factory_->CreateAudioSource(&constraints);
+        peer_connection_factory_->CreateAudioSource(options);
     // TODO(perkj): Test audio source when it is implemented. Currently audio
     // always use the default input.
     return peer_connection_factory_->CreateAudioTrack(rtc::CreateRandomUuid(),