Revert of Pass task runners to AudioManager constructor.

media/audio/audio_input_controller_unittest.cc

Index: media/audio/audio_input_controller_unittest.cc
diff --git a/media/audio/audio_input_controller_unittest.cc b/media/audio/audio_input_controller_unittest.cc
index 36ebc02cd14d0d2d82273471ab0fdd6d3bea4042..6a35d87c9a3528afde811e810a3be263c25e472c 100644
--- a/media/audio/audio_input_controller_unittest.cc
+++ b/media/audio/audio_input_controller_unittest.cc
@@ -67,20 +67,11 @@
 // Test fixture.
 class AudioInputControllerTest : public testing::Test {
  public:
-  AudioInputControllerTest()
-      : audio_manager_(
-            AudioManager::CreateForTesting(message_loop_.task_runner())) {
-    // Flush the message loop to ensure that AudioManager is fully initialized.
-    message_loop_.RunUntilIdle();
-  }
-  ~AudioInputControllerTest() override {
-    audio_manager_.reset();
-    message_loop_.RunUntilIdle();
-  }
+  AudioInputControllerTest() {}
+  ~AudioInputControllerTest() override {}
 
  protected:
   base::MessageLoop message_loop_;
-  ScopedAudioManagerPtr audio_manager_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AudioInputControllerTest);
@@ -94,12 +85,16 @@
   EXPECT_CALL(event_handler, OnCreated(NotNull()))
       .WillOnce(QuitMessageLoop(&message_loop_));
 
+  scoped_ptr<AudioManager> audio_manager(AudioManager::CreateForTesting());
   AudioParameters params(AudioParameters::AUDIO_FAKE, kChannelLayout,
                          kSampleRate, kBitsPerSample, kSamplesPerPacket);
 
   scoped_refptr<AudioInputController> controller =
-      AudioInputController::Create(audio_manager_.get(), &event_handler, params,
-                                   AudioManagerBase::kDefaultDeviceId, NULL);
+      AudioInputController::Create(audio_manager.get(),
+                                   &event_handler,
+                                   params,
+                                   AudioManagerBase::kDefaultDeviceId,
+                                   NULL);
   ASSERT_TRUE(controller.get());
 
   // Wait for OnCreated() to fire.
@@ -128,13 +123,17 @@
       .WillRepeatedly(CheckCountAndPostQuitTask(
           &count, 10, message_loop_.task_runner()));
 
+  scoped_ptr<AudioManager> audio_manager(AudioManager::CreateForTesting());
   AudioParameters params(AudioParameters::AUDIO_FAKE, kChannelLayout,
                          kSampleRate, kBitsPerSample, kSamplesPerPacket);
 
   // Creating the AudioInputController should render an OnCreated() call.
   scoped_refptr<AudioInputController> controller =
-      AudioInputController::Create(audio_manager_.get(), &event_handler, params,
-                                   AudioManagerBase::kDefaultDeviceId, NULL);
+      AudioInputController::Create(audio_manager.get(),
+                                   &event_handler,
+                                   params,
+                                   AudioManagerBase::kDefaultDeviceId,
+                                   NULL);
   ASSERT_TRUE(controller.get());
 
   // Start recording and trigger one OnRecording() call.
@@ -177,13 +176,17 @@
       .Times(Exactly(1))
       .WillOnce(QuitMessageLoop(&message_loop_));
 
+  scoped_ptr<AudioManager> audio_manager(AudioManager::CreateForTesting());
   AudioParameters params(AudioParameters::AUDIO_FAKE, kChannelLayout,
                          kSampleRate, kBitsPerSample, kSamplesPerPacket);
 
   // Creating the AudioInputController should render an OnCreated() call.
   scoped_refptr<AudioInputController> controller =
-      AudioInputController::Create(audio_manager_.get(), &event_handler, params,
-                                   AudioManagerBase::kDefaultDeviceId, NULL);
+      AudioInputController::Create(audio_manager.get(),
+                                   &event_handler,
+                                   params,
+                                   AudioManagerBase::kDefaultDeviceId,
+                                   NULL);
   ASSERT_TRUE(controller.get());
 
   // Start recording and trigger one OnRecording() call.
@@ -210,14 +213,18 @@
   EXPECT_CALL(event_handler, OnCreated(NotNull()))
     .Times(Exactly(0));
 
+  scoped_ptr<AudioManager> audio_manager(AudioManager::CreateForTesting());
   AudioParameters params(AudioParameters::AUDIO_FAKE,
                          kChannelLayout,
                          kSampleRate,
                          kBitsPerSample,
                          kSamplesPerPacket * 1000);
   scoped_refptr<AudioInputController> controller =
-      AudioInputController::Create(audio_manager_.get(), &event_handler, params,
-                                   AudioManagerBase::kDefaultDeviceId, NULL);
+      AudioInputController::Create(audio_manager.get(),
+                                   &event_handler,
+                                   params,
+                                   AudioManagerBase::kDefaultDeviceId,
+                                   NULL);
   ASSERT_FALSE(controller.get());
 }
 
@@ -232,14 +239,18 @@
   EXPECT_CALL(event_handler, OnRecording(NotNull()))
       .Times(Exactly(1));
 
+  scoped_ptr<AudioManager> audio_manager(AudioManager::CreateForTesting());
   AudioParameters params(AudioParameters::AUDIO_FAKE,
                          kChannelLayout,
                          kSampleRate,
                          kBitsPerSample,
                          kSamplesPerPacket);
   scoped_refptr<AudioInputController> controller =
-      AudioInputController::Create(audio_manager_.get(), &event_handler, params,
-                                   AudioManagerBase::kDefaultDeviceId, NULL);
+      AudioInputController::Create(audio_manager.get(),
+                                   &event_handler,
+                                   params,
+                                   AudioManagerBase::kDefaultDeviceId,
+                                   NULL);
   ASSERT_TRUE(controller.get());
 
   controller->Record();