Simplify AudioInputRendererHost IPC interface.

media/audio/audio_input_device_unittest.cc

 // Copyright (c) 2017 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 "base/memory/ptr_util.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "media/audio/audio_input_device.h"
 #include "testing/gmock/include/gmock/gmock.h"
@@ skipping 46 matching lines @@
 }  // namespace.
 
 // Regular construction.
 TEST(AudioInputDeviceTest, Noop) {
   base::MessageLoopForIO io_loop;
   MockAudioInputIPC* input_ipc = new MockAudioInputIPC();
   scoped_refptr<AudioInputDevice> device(
       new AudioInputDevice(base::WrapUnique(input_ipc), io_loop.task_runner()));
 }
 
-ACTION_P2(ReportStateChange, device, state) {
-  static_cast<AudioInputIPCDelegate*>(device)->OnStateChanged(state);
+ACTION_P(ReportStateChange, device) {
+  static_cast<AudioInputIPCDelegate*>(device)->OnError();
 }
 
 // Verify that we get an OnCaptureError() callback if CreateStream fails.
 TEST(AudioInputDeviceTest, FailToCreateStream) {
   AudioParameters params(AudioParameters::AUDIO_PCM_LOW_LATENCY,
                          CHANNEL_LAYOUT_STEREO, 48000, 16, 480);
 
   base::MessageLoopForIO io_loop;
   MockCaptureCallback callback;
   MockAudioInputIPC* input_ipc = new MockAudioInputIPC();
   scoped_refptr<AudioInputDevice> device(
       new AudioInputDevice(base::WrapUnique(input_ipc), io_loop.task_runner()));
   device->Initialize(params, &callback, 1);
   device->Start();
   EXPECT_CALL(*input_ipc, CreateStream(_, _, _, _, _))
-      .WillOnce(ReportStateChange(device.get(),
-                                  AUDIO_INPUT_IPC_DELEGATE_STATE_ERROR));
+      .WillOnce(ReportStateChange(device.get()));
   EXPECT_CALL(callback, OnCaptureError(_))
       .WillOnce(QuitLoop(io_loop.task_runner()));
   base::RunLoop().Run();
 }
 
 }  // namespace media.