Framing for a DOMStorage backend that does not depend on in-process-webkit.

webkit/dom_storage/dom_storage_task_runner.cc

+// Copyright (c) 2012 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 "webkit/dom_storage/dom_storage_task_runner.h"
+
+#include "base/bind.h"
+#include "base/bind_helpers.h"
+#include "base/message_loop_proxy.h"
+
+namespace dom_storage {
+
+DomStorageTaskRunner::DomStorageTaskRunner(
+    base::SequencedWorkerPool* sequenced_worker_pool,
+    base::MessageLoopProxy* delayed_task_loop)
+    : sequenced_worker_pool_(sequenced_worker_pool),
+      sequence_token_(
+          sequenced_worker_pool->GetNamedSequenceToken("dom_storage_token")),
+      delayed_task_loop_(delayed_task_loop) {
+}
+
+DomStorageTaskRunner::~DomStorageTaskRunner() {
+}
+
+void DomStorageTaskRunner::PostTask(
+    const tracked_objects::Location& from_here,
+    const base::Closure& task) {
+  // TODO(michaeln): Not all tasks need to be run prior to shutdown,
+  // maybe make better use of SHUTDOWN_BEHAVIOR stuff?
+  sequenced_worker_pool_->PostSequencedWorkerTask(
+      sequence_token_, from_here, task);
+}
+
+void DomStorageTaskRunner::PostDelayedTask(
+    const tracked_objects::Location& from_here,
+    const base::Closure& task,
+    base::TimeDelta delay) {
+  // Post a task to call this->PostTask() after the delay.
+  delayed_task_loop_->PostDelayedTask(
+      FROM_HERE, 
+      base::Bind(&DomStorageTaskRunner::PostTask, this,
+                 from_here, task),
+      delay.InMilliseconds());
+}
+
+}  // namespace dom_storage