Revert of Pass task runners to AudioManager constructor.

media/audio/mac/audio_auhal_mac_unittest.cc

Index: media/audio/mac/audio_auhal_mac_unittest.cc
diff --git a/media/audio/mac/audio_auhal_mac_unittest.cc b/media/audio/mac/audio_auhal_mac_unittest.cc
index 044116b59dae71414630536414b2b1a36664b726..73191cd2f56d06150bbba3b6dcc2717689867574 100644
--- a/media/audio/mac/audio_auhal_mac_unittest.cc
+++ b/media/audio/mac/audio_auhal_mac_unittest.cc
@@ -4,10 +4,9 @@
 
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/synchronization/waitable_event.h"
-#include "base/test/test_message_loop.h"
-#include "base/thread_task_runner_handle.h"
 #include "media/audio/audio_io.h"
 #include "media/audio/audio_manager.h"
 #include "media/audio/audio_unittest_util.h"
@@ -36,13 +35,12 @@
  public:
   AUHALStreamTest()
       : message_loop_(base::MessageLoop::TYPE_UI),
-        manager_(AudioManager::CreateForTesting(
-            base::ThreadTaskRunnerHandle::Get())) {
+        manager_(AudioManager::CreateForTesting()) {
     // Wait for the AudioManager to finish any initialization on the audio loop.
     base::RunLoop().RunUntilIdle();
   }
 
-  ~AUHALStreamTest() override {}
+  ~AUHALStreamTest() override { base::RunLoop().RunUntilIdle(); }
 
   AudioOutputStream* Create() {
     return manager_->MakeAudioOutputStream(
@@ -54,8 +52,8 @@
   }
 
  protected:
-  base::TestMessageLoop message_loop_;
-  ScopedAudioManagerPtr manager_;
+  base::MessageLoop message_loop_;
+  scoped_ptr<AudioManager> manager_;
   MockAudioSourceCallback source_;
 
  private: