Revert of Mojo EDK: Introduce MojoQueryHandleSignalsState API

mojo/public/cpp/system/tests/handle_signals_state_unittest.cc

Index: mojo/public/cpp/system/tests/handle_signals_state_unittest.cc
diff --git a/mojo/public/cpp/system/tests/handle_signals_state_unittest.cc b/mojo/public/cpp/system/tests/handle_signals_state_unittest.cc
deleted file mode 100644
index 82f538e17a3aea426d23e3ad89043c19af00a952..0000000000000000000000000000000000000000
--- a/mojo/public/cpp/system/tests/handle_signals_state_unittest.cc
+++ /dev/null
@@ -1,42 +0,0 @@
-// Copyright 2017 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "mojo/public/cpp/system/handle_signals_state.h"
-
-#include "mojo/public/c/system/types.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace mojo {
-namespace {
-
-using HandleSignalsStateTest = testing::Test;
-
-TEST_F(HandleSignalsStateTest, SanityCheck) {
-  // There's not much to test here. Just a quick sanity check to make sure the
-  // code compiles and the helper methods do what they're supposed to do.
-
-  HandleSignalsState empty_signals(MOJO_HANDLE_SIGNAL_NONE,
-                                   MOJO_HANDLE_SIGNAL_NONE);
-  EXPECT_FALSE(empty_signals.readable());
-  EXPECT_FALSE(empty_signals.writable());
-  EXPECT_FALSE(empty_signals.peer_closed());
-  EXPECT_TRUE(empty_signals.never_readable());
-  EXPECT_TRUE(empty_signals.never_writable());
-  EXPECT_TRUE(empty_signals.never_peer_closed());
-
-  HandleSignalsState all_signals(
-      MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE |
-          MOJO_HANDLE_SIGNAL_PEER_CLOSED,
-      MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE |
-          MOJO_HANDLE_SIGNAL_PEER_CLOSED);
-  EXPECT_TRUE(all_signals.readable());
-  EXPECT_TRUE(all_signals.writable());
-  EXPECT_TRUE(all_signals.peer_closed());
-  EXPECT_FALSE(all_signals.never_readable());
-  EXPECT_FALSE(all_signals.never_writable());
-  EXPECT_FALSE(all_signals.never_peer_closed());
-}
-
-}  // namespace
-}  // namespace mojo