Refactor BlimpConnection to TCPConnection

blimp/net/tcp_client_transport.h

Index: blimp/net/tcp_client_transport.h
diff --git a/blimp/net/tcp_client_transport.h b/blimp/net/tcp_client_transport.h
index aa8f049ef96e67f21465d855defa5b9c170b3f27..c781118c6f5d688b5ade607cb3aa165fe49a6994 100644
--- a/blimp/net/tcp_client_transport.h
+++ b/blimp/net/tcp_client_transport.h
@@ -37,7 +37,10 @@ class BLIMP_NET_EXPORT TCPClientTransport : public BlimpTransport {
 
   // BlimpTransport implementation.
   void Connect(const net::CompletionCallback& callback) override;
-  std::unique_ptr<MessagePort> TakeMessagePort() override;
+  std::unique_ptr<BlimpConnection> MakeConnection() override;
+
+  std::unique_ptr<MessagePort> TakeMessagePort();
+
   const char* GetName() const override;
 
  protected: