Introduce a basic Blink Scheduler

Source/platform/exported/WebSchedulerProxy.cpp

+// 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 "config.h"
+
+#include "public/platform/WebSchedulerProxy.h"
+
+#include "platform/scheduler/Scheduler.h"
+#include "wtf/Assertions.h"
+#include "wtf/PassOwnPtr.h"
+
+namespace blink {
+namespace {
+
+void runTask(PassOwnPtr<WebThread::Task> task)
+{
+    task->run();
+}
+
+} // namespace
+
+WebSchedulerProxy WebSchedulerProxy::create()
+{
+    return WebSchedulerProxy();
+}
+
+WebSchedulerProxy::WebSchedulerProxy()
+    : m_scheduler(WebCore::Scheduler::shared())
+{
+    ASSERT(m_scheduler);
+}
+
+WebSchedulerProxy::~WebSchedulerProxy()
+{
+}
+
+void WebSchedulerProxy::postInputTask(WebThread::Task* task)
+{
+    m_scheduler->postInputTask(bind(&runTask, adoptPtr(task)));
+}
+
+void WebSchedulerProxy::postCompositorTask(WebThread::Task* task)
+{
+    m_scheduler->postCompositorTask(bind(&runTask, adoptPtr(task)));
+}
+
+} // namespace blink