Looking up device id by session id for AudioRendererMixerInput

media/base/fake_output_device.cc

 // Copyright (c) 2015 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 "media/base/fake_output_device.h"
 
 #include "base/callback.h"
 
 namespace media {
 
 FakeOutputDevice::FakeOutputDevice()
     : FakeOutputDevice(OUTPUT_DEVICE_STATUS_OK) {}
 
-FakeOutputDevice::FakeOutputDevice(OutputDeviceStatus device_status)
-    : device_status_(device_status) {}
+FakeOutputDevice::FakeOutputDevice(OutputDeviceStatus status)
+    : FakeOutputDevice(
+          status,
+          media::AudioParameters(media::AudioParameters::AUDIO_FAKE,
+                                 media::CHANNEL_LAYOUT_STEREO,
+                                 media::AudioParameters::kTelephoneSampleRate,
+                                 16,
+                                 1)) {}
+
+FakeOutputDevice::FakeOutputDevice(OutputDeviceStatus status,
+                                   const AudioParameters& params)
+    : status_(status), params_(params) {}
 
 FakeOutputDevice::~FakeOutputDevice() {}
 
 void FakeOutputDevice::SwitchOutputDevice(
     const std::string& device_id,
     const url::Origin& security_origin,
     const SwitchOutputDeviceCB& callback) {
-  callback.Run(device_status_);
+  callback.Run(status_);
 }
 
 AudioParameters FakeOutputDevice::GetOutputParameters() {
-  return media::AudioParameters(
-      media::AudioParameters::AUDIO_FAKE, media::CHANNEL_LAYOUT_STEREO,
-      media::AudioParameters::kTelephoneSampleRate, 16, 1);
+  return params_;
 }
 
 OutputDeviceStatus FakeOutputDevice::GetDeviceStatus() {
-  return device_status_;
+  return status_;
 }
 
 }  // namespace media