Revert of scheduler: Add a base directory

components/scheduler/child/cancelable_closure_holder.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 "components/scheduler/child/cancelable_closure_holder.h"
+
+namespace scheduler {
+
+CancelableClosureHolder::CancelableClosureHolder() {
+}
+
+CancelableClosureHolder::~CancelableClosureHolder() {
+}
+
+void CancelableClosureHolder::Reset(const base::Closure& callback) {
+  callback_ = callback;
+  cancelable_callback_.Reset(callback_);
+}
+
+void CancelableClosureHolder::Cancel() {
+  DCHECK(!callback_.is_null());
+  cancelable_callback_.Reset(callback_);
+}
+
+const base::Closure& CancelableClosureHolder::callback() const {
+  DCHECK(!callback_.is_null());
+  return cancelable_callback_.callback();
+}
+
+}  // namespace scheduler