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

mojo/public/cpp/utility/lib/thread.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 <assert.h>
-
-#include "base/compiler_specific.h"
-
-namespace mojo {
-
-Thread::Thread() : options_(), thread_(), started_(false), joined_(false) {
-}
-
-Thread::Thread(const Options& options)
-    : options_(options), thread_(), started_(false), joined_(false) {
-}
-
-Thread::~Thread() {
-  // If it was started, it must have been joined.
-  assert(!started_ || joined_);
-}
-
-void Thread::Start() {
-  assert(!started_);
-  assert(!joined_);
-
-  pthread_attr_t attr;
-  int rv = pthread_attr_init(&attr);
-  ALLOW_UNUSED_LOCAL(rv);
-  assert(rv == 0);
-
-  // Non-default stack size?
-  if (options_.stack_size() != 0) {
-    rv = pthread_attr_setstacksize(&attr, options_.stack_size());
-    assert(rv == 0);
-  }
-
-  started_ = true;
-  rv = pthread_create(&thread_, &attr, &ThreadRunTrampoline, this);
-  assert(rv == 0);
-
-  rv = pthread_attr_destroy(&attr);
-  assert(rv == 0);
-}
-
-void Thread::Join() {
-  // Must have been started but not yet joined.
-  assert(started_);
-  assert(!joined_);
-
-  joined_ = true;
-  int rv = pthread_join(thread_, nullptr);
-  ALLOW_UNUSED_LOCAL(rv);
-  assert(rv == 0);
-}
-
-// static
-void* Thread::ThreadRunTrampoline(void* arg) {
-  Thread* self = static_cast<Thread*>(arg);
-  self->Run();
-  return nullptr;
-}
-
-}  // namespace mojo