Fix infinite loop in NaCl CancelableSyncSocket::Send().

base/sync_socket_nacl.cc

Index: base/sync_socket_nacl.cc
diff --git a/base/sync_socket_nacl.cc b/base/sync_socket_nacl.cc
index ebe4c9af33b4a6aa91ed0826ab8c27856e31f2c3..f6d17e7ffb61dc20468bbd4e987c927171273f11 100644
--- a/base/sync_socket_nacl.cc
+++ b/base/sync_socket_nacl.cc
@@ -64,11 +64,11 @@ CancelableSyncSocket::CancelableSyncSocket(Handle handle)
 }
 
 size_t CancelableSyncSocket::Send(const void* buffer, size_t length) {
-  return Send(buffer, length);
+  return SyncSocket::Send(buffer, length);
 }
 
 bool CancelableSyncSocket::Shutdown() {
-  return Close();
+  return SyncSocket::Close();
 }
 
 // static