Use IpcVideoFrameCapturer on network thread instead of capturer thread.

remoting/test/protocol_perftest.cc

Index: remoting/test/protocol_perftest.cc
diff --git a/remoting/test/protocol_perftest.cc b/remoting/test/protocol_perftest.cc
index b936479bde9614560124d8ca06323206d6bc925d..fa1a325bc67fbc855e92b44e5444e1266107ee79 100644
--- a/remoting/test/protocol_perftest.cc
+++ b/remoting/test/protocol_perftest.cc
@@ -331,9 +331,7 @@ class ProtocolPerfTest
     host_.reset(new ChromotingHost(
         &desktop_environment_factory_, std::move(session_manager),
         transport_context, host_thread_.task_runner(),
-        host_thread_.task_runner(), capture_thread_.task_runner(),
-        encode_thread_.task_runner(), host_thread_.task_runner(),
-        host_thread_.task_runner()));
+        encode_thread_.task_runner()));
 
     base::FilePath certs_dir(net::GetTestCertsDirectory());