Use MessageLoopProxy for network message loop.

remoting/host/screen_recorder_unittest.cc

Index: remoting/host/screen_recorder_unittest.cc
diff --git a/remoting/host/screen_recorder_unittest.cc b/remoting/host/screen_recorder_unittest.cc
index 69650eeade5a77ddea31d47950511c12694dd85f..159c10d5526f7d13e29a327934e728e18fb16f64 100644
--- a/remoting/host/screen_recorder_unittest.cc
+++ b/remoting/host/screen_recorder_unittest.cc
@@ -80,11 +80,12 @@ class ScreenRecorderTest : public testing::Test {
     // Capturer and Encoder are owned by ScreenRecorder.
     encoder_ = new MockEncoder();
 
-    connection_ = new MockConnectionToClient(&message_loop_, &handler_,
-                                             &host_stub_, &event_executor_);
+    connection_ = new MockConnectionToClient(
+        &handler_, &host_stub_, &event_executor_);
 
     record_ = new ScreenRecorder(
-        &message_loop_, &message_loop_, &message_loop_,
+        &message_loop_, &message_loop_,
+        base::MessageLoopProxy::CreateForCurrentThread(),
         &capturer_, encoder_);
   }