1 files changed, 69 insertions, 0 deletions
diff --git a/chromium/third_party/blink/renderer/platform/scheduler/base/virtual_time_domain.cc b/chromium/third_party/blink/renderer/platform/scheduler/base/virtual_time_domain.cc
new file mode 100644
index 00000000000..55d425b4dde
--- /dev/null
+++ b/chromium/third_party/blink/renderer/platform/scheduler/base/virtual_time_domain.cc
@@ -0,0 +1,69 @@
+// 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 "third_party/blink/renderer/platform/scheduler/base/virtual_time_domain.h"
+
+#include "base/bind.h"
+#include "third_party/blink/renderer/platform/scheduler/base/task_queue_impl.h"
+#include "third_party/blink/renderer/platform/scheduler/base/task_queue_manager_impl.h"
+
+namespace blink {
+namespace scheduler {
+
+VirtualTimeDomain::VirtualTimeDomain(base::TimeTicks initial_time_ticks)
+    : now_ticks_(initial_time_ticks), task_queue_manager_(nullptr) {}
+
+VirtualTimeDomain::~VirtualTimeDomain() = default;
+
+void VirtualTimeDomain::OnRegisterWithTaskQueueManager(
+    TaskQueueManagerImpl* task_queue_manager) {
+  task_queue_manager_ = task_queue_manager;
+  DCHECK(task_queue_manager_);
+}
+
+LazyNow VirtualTimeDomain::CreateLazyNow() const {
+  base::AutoLock lock(lock_);
+  return LazyNow(now_ticks_);
+}
+
+base::TimeTicks VirtualTimeDomain::Now() const {
+  base::AutoLock lock(lock_);
+  return now_ticks_;
+}
+
+void VirtualTimeDomain::RequestWakeUpAt(base::TimeTicks now,
+                                        base::TimeTicks run_time) {
+  // We don't need to do anything here because the caller of AdvanceTo is
+  // responsible for calling TaskQueueManagerImpl::MaybeScheduleImmediateWork if
+  // needed.
+}
+
+void VirtualTimeDomain::CancelWakeUpAt(base::TimeTicks run_time) {
+  // We ignore this because RequestWakeUpAt is a NOP.
+}
+
+base::Optional<base::TimeDelta> VirtualTimeDomain::DelayTillNextTask(
+    LazyNow* lazy_now) {
+  return base::nullopt;
+}
+
+void VirtualTimeDomain::AsValueIntoInternal(
+    base::trace_event::TracedValue* state) const {}
+
+void VirtualTimeDomain::AdvanceNowTo(base::TimeTicks now) {
+  base::AutoLock lock(lock_);
+  DCHECK_GE(now, now_ticks_);
+  now_ticks_ = now;
+}
+
+void VirtualTimeDomain::RequestDoWork() {
+  task_queue_manager_->MaybeScheduleImmediateWork(FROM_HERE);
+}
+
+const char* VirtualTimeDomain::GetName() const {
+  return "VirtualTimeDomain";
+}
+
+}  // namespace scheduler
+}  // namespace blink