Use correct thread for audio capturing and encoding.

remoting/host/client_session_unittest.cc

Index: remoting/host/client_session_unittest.cc
diff --git a/remoting/host/client_session_unittest.cc b/remoting/host/client_session_unittest.cc
index e9f1f4baaa170bf6739590143516fd8504e117e0..2ec094121df5e6975022702929c9335af3d04903 100644
--- a/remoting/host/client_session_unittest.cc
+++ b/remoting/host/client_session_unittest.cc
@@ -5,7 +5,6 @@
 #include "base/message_loop.h"
 #include "remoting/base/auto_thread_task_runner.h"
 #include "remoting/base/constants.h"
-#include "remoting/host/audio_capturer.h"
 #include "remoting/host/client_session.h"
 #include "remoting/host/desktop_environment.h"
 #include "remoting/host/host_mock_objects.h"
@@ -77,6 +76,7 @@ class ClientSessionTest : public testing::Test {
 
     client_session_ = new ClientSession(
         &session_event_handler_,
+        context_.audio_task_runner(),
         context_.capture_task_runner(),
         context_.encode_task_runner(),
         context_.network_task_runner(),
@@ -111,8 +111,7 @@ class ClientSessionTest : public testing::Test {
 
     EXPECT_TRUE(!event_executor_);
     event_executor_ = new MockEventExecutor();
-    return new DesktopEnvironment(scoped_ptr<AudioCapturer>(NULL),
-                                  scoped_ptr<EventExecutor>(event_executor_),
+    return new DesktopEnvironment(scoped_ptr<EventExecutor>(event_executor_),
                                   scoped_ptr<VideoFrameCapturer>(capturer));
   }