Mojo C++ bindings: remove the utility/ folder.

mojo/public/cpp/utility/tests/thread_unittest.cc

-// Copyright 2014 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/utility/thread.h"
-
-#include <stddef.h>
-
-#include "mojo/public/cpp/system/macros.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace mojo {
-namespace {
-
-class SetIntThread : public Thread {
- public:
-  SetIntThread(int* int_to_set, int value)
-      : int_to_set_(int_to_set),
-        value_(value) {
-  }
-  SetIntThread(const Options& options, int* int_to_set, int value)
-      : Thread(options),
-        int_to_set_(int_to_set),
-        value_(value) {
-  }
-
-  ~SetIntThread() override {}
-
-  void Run() override { *int_to_set_ = value_; }
-
- private:
-  int* const int_to_set_;
-  const int value_;
-
-  DISALLOW_COPY_AND_ASSIGN(SetIntThread);
-};
-
-TEST(ThreadTest, CreateAndJoin) {
-  int value = 0;
-
-  // Not starting the thread should result in a no-op.
-  {
-    SetIntThread thread(&value, 1234567);
-  }
-  EXPECT_EQ(0, value);
-
-  // Start and join.
-  {
-    SetIntThread thread(&value, 12345678);
-    thread.Start();
-    thread.Join();
-    EXPECT_EQ(12345678, value);
-  }
-
-  // Ditto, with non-default (but reasonable) stack size.
-  {
-    Thread::Options options;
-    options.set_stack_size(1024 * 1024);  // 1 MB.
-    SetIntThread thread(options, &value, 12345678);
-    thread.Start();
-    thread.Join();
-    EXPECT_EQ(12345678, value);
-  }
-}
-
-// Tests of assertions for Debug builds.
-// Note: It's okay to create threads, despite gtest having to fork. (The threads
-// are in the child process.)
-#if !defined(NDEBUG)
-TEST(ThreadTest, DebugAssertionFailures) {
-  // Can only start once.
-  EXPECT_DEATH_IF_SUPPORTED({
-    int value = 0;
-    SetIntThread thread(&value, 1);
-    thread.Start();
-    thread.Start();
-  }, "");
-
-  // Must join (if you start).
-  EXPECT_DEATH_IF_SUPPORTED({
-    int value = 0;
-    SetIntThread thread(&value, 2);
-    thread.Start();
-  }, "");
-
-  // Can only join once.
-  EXPECT_DEATH_IF_SUPPORTED({
-    int value = 0;
-    SetIntThread thread(&value, 3);
-    thread.Start();
-    thread.Join();
-    thread.Join();
-  }, "");
-
-  // Stack too big (we're making certain assumptions here).
-  EXPECT_DEATH_IF_SUPPORTED({
-    int value = 0;
-    Thread::Options options;
-    options.set_stack_size(static_cast<size_t>(-1));
-    SetIntThread thread(options, &value, 4);
-    thread.Start();
-    thread.Join();
-  }, "");
-}
-#endif  // !defined(NDEBUG)
-
-}  // namespace
-}  // namespace mojo