content: Add RendererScheduler.

content/renderer/scheduler/web_scheduler_impl.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 "content/renderer/scheduler/web_scheduler_impl.h"
+
+#include "base/bind.h"
+#include "content/renderer/scheduler/renderer_scheduler.h"
+#include "third_party/WebKit/public/platform/WebTraceLocation.h"
+
+namespace content {
+
+WebSchedulerImpl::WebSchedulerImpl(RendererScheduler* renderer_scheduler)
+    : renderer_scheduler_(renderer_scheduler),
+      idle_task_runner_(renderer_scheduler_->IdleTaskRunner()) {
+}
+
+WebSchedulerImpl::~WebSchedulerImpl() {
+}
+
+bool WebSchedulerImpl::shouldYieldForHighPriorityWork() {
+  return renderer_scheduler_->ShouldYieldForHighPriorityWork();
+}
+
+void WebSchedulerImpl::runIdleTask(
+    scoped_ptr<blink::WebScheduler::IdleTask> task,
+    base::TimeTicks deadline) {
+  task->run((deadline - base::TimeTicks()).InSecondsF());
+}
+
+void WebSchedulerImpl::postIdleTask(const blink::WebTraceLocation& web_location,
+                                    blink::WebScheduler::IdleTask* task) {
+  scoped_ptr<blink::WebScheduler::IdleTask> scoped_task(task);
+  tracked_objects::Location location(
+      web_location.functionName(), web_location.fileName(), -1, nullptr);
+  idle_task_runner_->PostIdleTask(
+      location,
+      base::Bind(&WebSchedulerImpl::runIdleTask, base::Passed(&scoped_task)));
+}
+
+void WebSchedulerImpl::shutdown() {
+  return renderer_scheduler_->Shutdown();
+}
+
+}  // namespace content