PPB_TCPSocket: add support for TCP server socket operations.

ppapi/tests/test_tcp_socket.h

Index: ppapi/tests/test_tcp_socket.h
diff --git a/ppapi/tests/test_tcp_socket.h b/ppapi/tests/test_tcp_socket.h
index 44c73214f654fd8f13823d421bb36079cdeb4a29..136dc466578f819142a4c53e2800d48d74ef3be1 100644
--- a/ppapi/tests/test_tcp_socket.h
+++ b/ppapi/tests/test_tcp_socket.h
@@ -27,9 +27,16 @@ class TestTCPSocket: public TestCase {
   std::string TestConnect();
   std::string TestReadWrite();
   std::string TestSetOption();
-
-  int32_t ReadFirstLineFromSocket(pp::TCPSocket* socket, std::string* s);
-  int32_t WriteStringToSocket(pp::TCPSocket* socket, const std::string& s);
+  std::string TestListen();
+  std::string TestBacklog();
+
+  std::string ReadFirstLineFromSocket(pp::TCPSocket* socket, std::string* s);
+  std::string ReadFromSocket(pp::TCPSocket* socket,
+                             char* buffer,
+                             size_t num_bytes);
+  std::string WriteToSocket(pp::TCPSocket* socket, const std::string& s);
+  std::string GetAddressToBind(pp::NetAddress* address);
+  std::string StartListen(pp::TCPSocket* socket, int32_t backlog);
 
   pp::NetAddress addr_;
 };