Pass task runners to AudioManager constructor.

media/audio/audio_input_unittest.cc

Index: media/audio/audio_input_unittest.cc
diff --git a/media/audio/audio_input_unittest.cc b/media/audio/audio_input_unittest.cc
index abb47ce955be1299d5fcd201869e11981120bcfa..7dcfb0ef38e515ef913f06073a249be9bfeece3c 100644
--- a/media/audio/audio_input_unittest.cc
+++ b/media/audio/audio_input_unittest.cc
@@ -50,12 +50,14 @@ class TestInputCallback : public AudioInputStream::AudioInputCallback {
 };
 
 class AudioInputTest : public testing::Test {
-  public:
-   AudioInputTest() :
-      message_loop_(base::MessageLoop::TYPE_UI),
-      audio_manager_(AudioManager::CreateForTesting()),
-      audio_input_stream_(NULL) {
-    // Wait for the AudioManager to finish any initialization on the audio loop.
+ public:
+  AudioInputTest()
+      : message_loop_(base::MessageLoop::TYPE_UI),
+        audio_manager_(
+            AudioManager::CreateForTesting(message_loop_.task_runner())),
+        audio_input_stream_(NULL) {
+    // Wait for the AudioManager to finish any initialization on the audio
+    // loop.
     base::RunLoop().RunUntilIdle();
   }
 
@@ -166,7 +168,7 @@ class AudioInputTest : public testing::Test {
   }
 
   base::MessageLoop message_loop_;
-  scoped_ptr<AudioManager> audio_manager_;
+  ScopedAudioManagerPtr audio_manager_;
   AudioInputStream* audio_input_stream_;
 
  private: