Remove parts of //cc we aren't using

cc/base/unique_notifier.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 "cc/base/unique_notifier.h"
-
-#include "base/bind.h"
-#include "base/bind_helpers.h"
-#include "base/location.h"
-#include "base/sequenced_task_runner.h"
-
-namespace cc {
-
-UniqueNotifier::UniqueNotifier(base::SequencedTaskRunner* task_runner,
-                               const base::Closure& closure)
-    : task_runner_(task_runner),
-      closure_(closure),
-      notification_pending_(false),
-      weak_ptr_factory_(this) {
-}
-
-UniqueNotifier::~UniqueNotifier() {
-}
-
-void UniqueNotifier::Schedule() {
-  if (notification_pending_)
-    return;
-
-  task_runner_->PostTask(
-      FROM_HERE,
-      base::Bind(&UniqueNotifier::Notify, weak_ptr_factory_.GetWeakPtr()));
-  notification_pending_ = true;
-}
-
-void UniqueNotifier::Notify() {
-  // Note that the order here is important in case closure schedules another
-  // run.
-  notification_pending_ = false;
-  closure_.Run();
-}
-
-}  // namespace cc