Pass task runners to AudioManager constructor.

content/browser/renderer_host/media/video_capture_host_unittest.cc

Index: content/browser/renderer_host/media/video_capture_host_unittest.cc
diff --git a/content/browser/renderer_host/media/video_capture_host_unittest.cc b/content/browser/renderer_host/media/video_capture_host_unittest.cc
index b1d991a95fe3fe7d5e8430685c5fcbfc58b1039d..3c15e1130a215466af838b235c309bdee9d93ce7 100644
--- a/content/browser/renderer_host/media/video_capture_host_unittest.cc
+++ b/content/browser/renderer_host/media/video_capture_host_unittest.cc
@@ -273,7 +273,7 @@ class VideoCaptureHostTest : public testing::Test {
 #endif
 
     // Create our own MediaStreamManager.
-    audio_manager_.reset(media::AudioManager::CreateForTesting());
+    audio_manager_ = media::AudioManager::CreateForTesting(task_runner_);
 #ifndef TEST_REAL_CAPTURE_DEVICE
     base::CommandLine::ForCurrentProcess()->AppendSwitch(
         switches::kUseFakeDeviceForMediaStream);
@@ -483,7 +483,7 @@ class VideoCaptureHostTest : public testing::Test {
 
  private:
   StrictMock<MockMediaStreamRequester> stream_requester_;
-  scoped_ptr<media::AudioManager> audio_manager_;
+  media::ScopedAudioManagerPtr audio_manager_;
   scoped_ptr<MediaStreamManager> media_stream_manager_;
   content::TestBrowserThreadBundle thread_bundle_;
   content::TestBrowserContext browser_context_;