Add functionality to pppapi TCPSocket to support secure sockets in flash

ppapi/cpp/private/tcp_socket_private.h

Index: ppapi/cpp/private/tcp_socket_private.h
diff --git a/ppapi/cpp/private/tcp_socket_private.h b/ppapi/cpp/private/tcp_socket_private.h
index 839c7cfbfbee5129facb30006a48398d6aa2222b..b4b00a85a37e2959356657d6ea868f43bce1d7d4 100644
--- a/ppapi/cpp/private/tcp_socket_private.h
+++ b/ppapi/cpp/private/tcp_socket_private.h
@@ -9,6 +9,7 @@
 #include "ppapi/c/private/ppb_tcp_socket_private.h"
 #include "ppapi/cpp/pass_ref.h"
 #include "ppapi/cpp/resource.h"
+#include "ppapi/cpp/private/flash_x509_certificate.h"
 
 namespace pp {
 
@@ -34,6 +35,9 @@ class TCPSocketPrivate : public Resource {
   int32_t SSLHandshake(const char* server_name,
                        uint16_t server_port,
                        const CompletionCallback& callback);
+  X509Certificate GetServerCertificate();
+  bool AddChainBuildingCertificate(const X509Certificate& cert, bool trusted);
+
   int32_t Read(char* buffer,
                int32_t bytes_to_read,
                const CompletionCallback& callback);