Delete AsyncSocket class, merge into Socket class

Bug: webrtc:13065
Change-Id: I13afee2386ea9c4de0e4fa95133f0c4d3ec826e8
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/227031
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Commit-Queue: Niels Moller <nisse@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#34787}
diff --git a/rtc_base/async_tcp_socket.h b/rtc_base/async_tcp_socket.h
index 610d17d..ddf9a43 100644
--- a/rtc_base/async_tcp_socket.h
+++ b/rtc_base/async_tcp_socket.h
@@ -16,7 +16,6 @@
 #include <memory>
 
 #include "rtc_base/async_packet_socket.h"
-#include "rtc_base/async_socket.h"
 #include "rtc_base/buffer.h"
 #include "rtc_base/constructor_magic.h"
 #include "rtc_base/socket.h"
@@ -29,7 +28,7 @@
 // buffer them in user space.
 class AsyncTCPSocketBase : public AsyncPacketSocket {
  public:
-  AsyncTCPSocketBase(AsyncSocket* socket, bool listen, size_t max_packet_size);
+  AsyncTCPSocketBase(Socket* socket, bool listen, size_t max_packet_size);
   ~AsyncTCPSocketBase() override;
 
   // Pure virtual methods to send and recv data.
@@ -38,7 +37,7 @@
            const rtc::PacketOptions& options) override = 0;
   virtual void ProcessInput(char* data, size_t* len) = 0;
   // Signals incoming connection.
-  virtual void HandleIncomingConnection(AsyncSocket* socket) = 0;
+  virtual void HandleIncomingConnection(Socket* socket) = 0;
 
   SocketAddress GetLocalAddress() const override;
   SocketAddress GetRemoteAddress() const override;
@@ -58,9 +57,9 @@
   // Binds and connects `socket` and creates AsyncTCPSocket for
   // it. Takes ownership of `socket`. Returns null if bind() or
   // connect() fail (`socket` is destroyed in that case).
-  static AsyncSocket* ConnectSocket(AsyncSocket* socket,
-                                    const SocketAddress& bind_address,
-                                    const SocketAddress& remote_address);
+  static Socket* ConnectSocket(Socket* socket,
+                               const SocketAddress& bind_address,
+                               const SocketAddress& remote_address);
   int FlushOutBuffer();
   // Add data to `outbuf_`.
   void AppendToOutBuffer(const void* pv, size_t cb);
@@ -71,12 +70,12 @@
 
  private:
   // Called by the underlying socket
-  void OnConnectEvent(AsyncSocket* socket);
-  void OnReadEvent(AsyncSocket* socket);
-  void OnWriteEvent(AsyncSocket* socket);
-  void OnCloseEvent(AsyncSocket* socket, int error);
+  void OnConnectEvent(Socket* socket);
+  void OnReadEvent(Socket* socket);
+  void OnWriteEvent(Socket* socket);
+  void OnCloseEvent(Socket* socket, int error);
 
-  std::unique_ptr<AsyncSocket> socket_;
+  std::unique_ptr<Socket> socket_;
   bool listen_;
   Buffer inbuf_;
   Buffer outbuf_;
@@ -91,17 +90,17 @@
   // Binds and connects `socket` and creates AsyncTCPSocket for
   // it. Takes ownership of `socket`. Returns null if bind() or
   // connect() fail (`socket` is destroyed in that case).
-  static AsyncTCPSocket* Create(AsyncSocket* socket,
+  static AsyncTCPSocket* Create(Socket* socket,
                                 const SocketAddress& bind_address,
                                 const SocketAddress& remote_address);
-  AsyncTCPSocket(AsyncSocket* socket, bool listen);
+  AsyncTCPSocket(Socket* socket, bool listen);
   ~AsyncTCPSocket() override {}
 
   int Send(const void* pv,
            size_t cb,
            const rtc::PacketOptions& options) override;
   void ProcessInput(char* data, size_t* len) override;
-  void HandleIncomingConnection(AsyncSocket* socket) override;
+  void HandleIncomingConnection(Socket* socket) override;
 
  private:
   RTC_DISALLOW_COPY_AND_ASSIGN(AsyncTCPSocket);