Remove dead code related to media device enumerations and monitoring.

content/renderer/media/webrtc/processed_local_audio_source_unittest.cc

 // Copyright 2016 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 <memory>
 #include <string>
 
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "build/build_config.h"
@@ skipping 82 matching lines @@
     blink_audio_track_.reset();
     blink_audio_source_.reset();
     blink::WebHeap::collectAllGarbageForTesting();
   }
 
   void CreateProcessedLocalAudioSource(
       const blink::WebMediaConstraints& constraints) {
     ProcessedLocalAudioSource* const source = new ProcessedLocalAudioSource(
         -1 /* consumer_render_frame_id is N/A for non-browser tests */,
         StreamDeviceInfo(MEDIA_DEVICE_AUDIO_CAPTURE, "Mock audio device",
-                         "mock_audio_device_id", "mock_group_id", kSampleRate,
-                         kChannelLayout, kRequestedBufferSize),
+                         "mock_audio_device_id", kSampleRate, kChannelLayout,
+                         kRequestedBufferSize),
         &mock_dependency_factory_);
     source->SetAllowInvalidRenderFrameIdForTesting(true);
     source->SetSourceConstraints(constraints);
     blink_audio_source_.setExtraData(source);  // Takes ownership.
   }
 
   void CheckSourceFormatMatches(const media::AudioParameters& params) {
     EXPECT_EQ(kSampleRate, params.sample_rate());
     EXPECT_EQ(kChannelLayout, params.channel_layout());
     EXPECT_EQ(kExpectedSourceBufferSize, params.frames_per_buffer());
@@ skipping 107 matching lines @@
   // Even though ConnectToTrack() failed, there should still have been a new
   // MediaStreamAudioTrack instance created, owned by the
   // blink::WebMediaStreamTrack.
   EXPECT_TRUE(MediaStreamAudioTrack::From(blink_audio_track()));
 }
 
 // TODO(miu): There's a lot of logic in ProcessedLocalAudioSource around
 // constraints processing and validation that should have unit testing.
 
 }  // namespace content