Change TCPListenSocket::SendInternal to use a non-blocking implementation.

net/base/tcp_listen_socket.h

Index: net/base/tcp_listen_socket.h
===================================================================
--- net/base/tcp_listen_socket.h	(revision 135347)
+++ net/base/tcp_listen_socket.h	(working copy)
@@ -26,6 +26,7 @@
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
+#include "base/memory/weak_ptr.h"
 #include "net/base/listen_socket.h"
 #include "net/base/net_export.h"
 
@@ -103,7 +104,12 @@
  private:
   bool reads_paused_;
   bool has_pending_reads_;
+  bool has_pending_writes_;
+  std::string send_data_;
 
+  // Used to continue sending data asynchronously.
+  base::WeakPtrFactory<TCPListenSocket> weak_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(TCPListenSocket);
 };