Fix WebRtcFrameScheduler to wait for first key frame request.

remoting/protocol/fake_session.cc

Index: remoting/protocol/fake_session.cc
diff --git a/remoting/protocol/fake_session.cc b/remoting/protocol/fake_session.cc
index e0bdd896d4eac6d0eebc12d1e967123743f0eea5..f4d5cd158f17a0e24c7ef26cff050ff50a9c367d 100644
--- a/remoting/protocol/fake_session.cc
+++ b/remoting/protocol/fake_session.cc
@@ -86,7 +86,20 @@ void FakeSession::SendTransportInfo(
     std::unique_ptr<buzz::XmlElement> transport_info) {
   if (!peer_)
     return;
-  peer_->transport_->ProcessTransportInfo(transport_info.get());
+
+  if (signaling_delay_.is_zero()) {
+    peer_->ProcessTransportInfo(std::move(transport_info));
+  } else {
+    base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
+        FROM_HERE, base::Bind(&FakeSession::ProcessTransportInfo, peer_,
+                              base::Passed(&transport_info)),
+        signaling_delay_);
+  }
+}
+
+void FakeSession::ProcessTransportInfo(
+    std::unique_ptr<buzz::XmlElement> transport_info) {
+  transport_->ProcessTransportInfo(transport_info.get());
 }
 
 }  // namespace protocol