Provide a way to disable Nagle's algorithm on Pepper TCP sockets.

ppapi/tests/test_tcp_socket_private.cc

Index: ppapi/tests/test_tcp_socket_private.cc
diff --git a/ppapi/tests/test_tcp_socket_private.cc b/ppapi/tests/test_tcp_socket_private.cc
index 6bffe49d254ed94f8e5a4773426c59d715f2ba16..391e032cd81820ec7bdb6c93264d15643a8ed6d8 100644
--- a/ppapi/tests/test_tcp_socket_private.cc
+++ b/ppapi/tests/test_tcp_socket_private.cc
@@ -51,6 +51,7 @@ void TestTCPSocketPrivate::RunTests(const std::string& filter) {
   RUN_TEST_FORCEASYNC_AND_NOT(ReadWrite, filter);
   RUN_TEST_FORCEASYNC_AND_NOT(ReadWriteSSL, filter);
   RUN_TEST_FORCEASYNC_AND_NOT(ConnectAddress, filter);
+  RUN_TEST_FORCEASYNC_AND_NOT(SetSocketFeature, filter);
 }
 
 std::string TestTCPSocketPrivate::TestBasic() {
@@ -160,6 +161,26 @@ std::string TestTCPSocketPrivate::TestConnectAddress() {
   PASS();
 }
 
+
+std::string TestTCPSocketPrivate::TestSetSocketFeature() {
+  pp::TCPSocketPrivate socket(instance_);
+  TestCompletionCallback cb(instance_->pp_instance(), force_async_);
+
+  int32_t rv = socket.SetSocketFeature(PP_TCPSOCKETFEATURE_NO_DELAY, true, cb);
+  ASSERT_TRUE(!force_async_ || rv == PP_OK_COMPLETIONPENDING);
+  if (rv == PP_OK_COMPLETIONPENDING)
+    rv = cb.WaitForResult();
+  ASSERT_EQ(PP_OK, rv);
+
+  rv = socket.SetSocketFeature(PP_TCPSOCKETFEATURE_INVALID, true, cb);
+  ASSERT_TRUE(!force_async_ || rv == PP_OK_COMPLETIONPENDING);
+  if (rv == PP_OK_COMPLETIONPENDING)
+    rv = cb.WaitForResult();
+  ASSERT_EQ(PP_ERROR_FAILED, rv);
+
+  PASS();
+}
+
 int32_t TestTCPSocketPrivate::ReadFirstLineFromSocket(
     pp::TCPSocketPrivate* socket,
     std::string* s) {