scheduler: Implement WebFrameScheduler and WebPageScheduler

components/scheduler/renderer/web_frame_scheduler_impl.cc

+// Copyright 2015 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/scheduler/renderer/web_frame_scheduler_impl.h"
+
+#include "components/scheduler/child/web_task_runner_impl.h"
+#include "components/scheduler/renderer/renderer_scheduler.h"
+#include "components/scheduler/renderer/web_frame_host_scheduler_impl.h"
+#include "third_party/WebKit/public/platform/WebString.h"
+
+namespace scheduler {
+
+WebFrameSchedulerImpl::WebFrameSchedulerImpl(
+    RendererScheduler* render_scheduler,
+    WebFrameHostSchedulerImpl* parent_frame_host_scheduler)
+    : render_scheduler_(render_scheduler),
+      parent_frame_host_scheduler_(parent_frame_host_scheduler),
+      visible_(true) {}
+
+WebFrameSchedulerImpl::~WebFrameSchedulerImpl() {
+  if (loading_task_queue_.get())
+    loading_task_queue_->UnregisterTaskQueue();
+
+  if (timer_task_queue_.get())
+    timer_task_queue_->UnregisterTaskQueue();
+
+  parent_frame_host_scheduler_->Unregister(this);
+}
+
+void WebFrameSchedulerImpl::setFrameVisible(bool visible) {
+  visible_ = visible;
+  // TODO(alexclarke): Do something with this flag.
+}
+
+blink::WebTaskRunner* WebFrameSchedulerImpl::loadingTaskRunner() {
+  if (!loading_web_task_runner_) {
+    loading_task_queue_ =
+        render_scheduler_->NewLoadingTaskRunner("frame_loading_tq");
+    loading_web_task_runner_.reset(new WebTaskRunnerImpl(loading_task_queue_));
+  }
+  return loading_web_task_runner_.get();
+}
+
+blink::WebTaskRunner* WebFrameSchedulerImpl::timerTaskRunner() {
+  if (!timer_web_task_runner_) {
+    timer_task_queue_ = render_scheduler_->NewTimerTaskRunner("frame_timer_tq");
+    timer_web_task_runner_.reset(new WebTaskRunnerImpl(timer_task_queue_));
+  }
+  return timer_web_task_runner_.get();
+}
+
+void WebFrameSchedulerImpl::setFrameOrigin(
+    const blink::WebSecurityOrigin* origin) {
+  DCHECK(origin);
+  origin_ = *origin;
+  // TODO(skyostil): Associate the task queues with this origin.
+}
+
+}  // namespace scheduler