audioproc_f with simulated mic analog gain

webrtc/modules/audio_processing/test/fake_rec_device_identity.cc

+/*
+ *  Copyright (c) 2017 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.
+ */
+
+#include "webrtc/modules/audio_processing/test/fake_rec_device_identity.h"
+
+namespace webrtc {
+namespace test {
+
+FakeRecordingDeviceIdentity::FakeRecordingDeviceIdentity(int initial_mic_level)
+    : FakeRecordingDevice(initial_mic_level) {}
+
+FakeRecordingDeviceIdentity::~FakeRecordingDeviceIdentity() = default;
+
+void FakeRecordingDeviceIdentity::ModifySampleInt16(int16_t* sample) {}
+
+void FakeRecordingDeviceIdentity::ModifySampleFloat(float* sample) {}
+
+}  // namespace test
+}  // namespace webrtc