Enable new getUserMedia audio constraints algorithm behind a flag.

content/renderer/media/rtc_peer_connection_handler_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/media/rtc_peer_connection_handler.h"
 
 #include <stddef.h>
 
 #include <map>
 #include <memory>
@@ skipping 283 matching lines @@
                                   blink::WebString::FromUTF8("audio_track"),
                                   false /* remote */);
     ProcessedLocalAudioSource* const audio_source =
         new ProcessedLocalAudioSource(
             -1 /* consumer_render_frame_id is N/A for non-browser tests */,
             StreamDeviceInfo(MEDIA_DEVICE_AUDIO_CAPTURE, "Mock device",
                              "mock_device_id",
                              media::AudioParameters::kAudioCDSampleRate,
                              media::CHANNEL_LAYOUT_STEREO,
                              media::AudioParameters::kAudioCDSampleRate / 100),
-            MockConstraintFactory().CreateWebMediaConstraints(),
+            AudioProcessingProperties(),
             base::Bind(&RTCPeerConnectionHandlerTest::OnAudioSourceStarted),
             mock_dependency_factory_.get());
     audio_source->SetAllowInvalidRenderFrameIdForTesting(true);
     blink_audio_source.SetExtraData(audio_source);  // Takes ownership.
 
     blink::WebMediaStreamSource video_source;
     video_source.Initialize(blink::WebString::FromUTF8(video_track_label),
                             blink::WebMediaStreamSource::kTypeVideo,
                             blink::WebString::FromUTF8("video_track"),
                             false /* remote */);
@@ skipping 1145 matching lines @@
                                     testing::Ref(tracks[0])));
 
   std::unique_ptr<blink::WebRTCDTMFSenderHandler> sender(
       pc_handler_->CreateDTMFSender(tracks[0]));
   EXPECT_TRUE(sender.get());
 
   StopAllTracks(local_stream);
 }
 
 }  // namespace content