Revert of Don't use barcodes in ProtocolPerfTests

remoting/host/client_session.cc

Index: remoting/host/client_session.cc
diff --git a/remoting/host/client_session.cc b/remoting/host/client_session.cc
index f3fcbc31758969bb34db427c70c041f2f81e85eb..dcb87044efc8a0a2aa9c4c7b325e8ddccc85a6ae 100644
--- a/remoting/host/client_session.cc
+++ b/remoting/host/client_session.cc
@@ -295,9 +295,6 @@
 
   // Pause capturing if necessary.
   video_stream_->Pause(pause_video_);
-
-  if (event_timestamp_source_for_tests_)
-    video_stream_->SetEventTimestampsSource(event_timestamp_source_for_tests_);
 }
 
 void ClientSession::OnConnectionChannelsConnected() {
@@ -407,17 +404,9 @@
   return this;
 }
 
-void ClientSession::SetEventTimestampsSourceForTests(
-    scoped_refptr<protocol::InputEventTimestampsSource>
-        event_timestamp_source) {
-  DCHECK(CalledOnValidThread());
-  event_timestamp_source_for_tests_ = event_timestamp_source;
-  if (video_stream_)
-    video_stream_->SetEventTimestampsSource(event_timestamp_source_for_tests_);
-}
-
 std::unique_ptr<protocol::ClipboardStub> ClientSession::CreateClipboardProxy() {
   DCHECK(CalledOnValidThread());
+
   return base::MakeUnique<protocol::ClipboardThreadProxy>(
       client_clipboard_factory_.GetWeakPtr(),
       base::ThreadTaskRunnerHandle::Get());