Remove audio_mixer_manager_win.cc/.h.

webrtc/modules/audio_device/BUILD.gn

 # Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 import("../../webrtc.gni")
 
@@ skipping 193 matching lines @@
           "AudioToolbox.framework",
           "AVFoundation.framework",
           "Foundation.framework",
           "UIKit.framework",
         ]
       }
       if (is_win) {
         sources += [
           "win/audio_device_core_win.cc",
           "win/audio_device_core_win.h",
-          "win/audio_mixer_manager_win.cc",
-          "win/audio_mixer_manager_win.h",
         ]
         libs = [
           # Required for the built-in WASAPI AEC.
           "dmoguids.lib",
           "wmcodecdspuuid.lib",
           "amstrmid.lib",
           "msdmo.lib",
         ]
       }
       configs += [ ":audio_device_warnings_config" ]
@@ skipping 126 matching lines @@
       "android/java/src/org/webrtc/voiceengine/WebRtcAudioManager.java",
       "android/java/src/org/webrtc/voiceengine/WebRtcAudioRecord.java",
       "android/java/src/org/webrtc/voiceengine/WebRtcAudioTrack.java",
       "android/java/src/org/webrtc/voiceengine/WebRtcAudioUtils.java",
     ]
     deps = [
       "//webrtc/base:base_java",
     ]
   }
 }