[GCM] Extracting Delayed Task Controller from GCMDesktopDriver

components/gcm_driver/gcm_delayed_task_controller.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/gcm_driver/gcm_delayed_task_controller.h"
+
+#include "base/logging.h"
+
+namespace gcm {
+
+GCMDelayedTaskController::GCMDelayedTaskController() : ready_(false) {
+}
+
+GCMDelayedTaskController::~GCMDelayedTaskController() {
+}
+
+void GCMDelayedTaskController::AddTask(const base::Closure& task) {
+  delayed_tasks_.push_back(task);
+}
+
+void GCMDelayedTaskController::SetReady() {
+  ready_ = true;
+  RunTasks();
+}
+
+bool GCMDelayedTaskController::CanRunTaskWithoutDelay() const {
+  return ready_;
+}
+
+void GCMDelayedTaskController::RunTasks() {
+  DCHECK(ready_);
+
+  for (size_t i = 0; i < delayed_tasks_.size(); ++i)
+    delayed_tasks_[i].Run();
+  delayed_tasks_.clear();
+}
+
+}  // namespace gcm