Adding ability to simulate EWOULDBLOCK/SignalReadyToSend.

webrtc/base/testclient.cc

Index: webrtc/base/testclient.cc
diff --git a/webrtc/base/testclient.cc b/webrtc/base/testclient.cc
index fcf64e7d6210356f368343eb3a2cff5a141c4cc9..361bf362619e94606ad9ccd1a4aa18d623f0a7e1 100644
--- a/webrtc/base/testclient.cc
+++ b/webrtc/base/testclient.cc
@@ -19,7 +19,7 @@ namespace rtc {
 //         NextPacket.
 
 TestClient::TestClient(AsyncPacketSocket* socket)
-    : socket_(socket), ready_to_send_(false), prev_packet_timestamp_(-1) {
+    : socket_(socket), prev_packet_timestamp_(-1) {
   packets_ = new std::vector<Packet*>();
   socket_->SignalReadPacket.connect(this, &TestClient::OnPacket);
   socket_->SignalReadyToSend.connect(this, &TestClient::OnReadyToSend);
@@ -130,10 +130,6 @@ int TestClient::SetOption(Socket::Option opt, int value) {
   return socket_->SetOption(opt, value);
 }
 
-bool TestClient::ready_to_send() const {
-  return ready_to_send_;
-}
-
 void TestClient::OnPacket(AsyncPacketSocket* socket, const char* buf,
                           size_t size, const SocketAddress& remote_addr,
                           const PacketTime& packet_time) {
@@ -142,7 +138,7 @@ void TestClient::OnPacket(AsyncPacketSocket* socket, const char* buf,
 }
 
 void TestClient::OnReadyToSend(AsyncPacketSocket* socket) {
-  ready_to_send_ = true;
+  ++ready_to_send_count_;
 }
 
 TestClient::Packet::Packet(const SocketAddress& a,