Prepare for per-webview virtual time

components/scheduler/base/task_queue_impl.cc

Index: components/scheduler/base/task_queue_impl.cc
diff --git a/components/scheduler/base/task_queue_impl.cc b/components/scheduler/base/task_queue_impl.cc
index 5508c9b40d24dbefd416b3c62d06ea46b480a726..e013804dad0397931d96b1e9dd25b4992d9efebc 100644
--- a/components/scheduler/base/task_queue_impl.cc
+++ b/components/scheduler/base/task_queue_impl.cc
@@ -617,6 +617,14 @@ void TaskQueueImpl::SetTimeDomain(TimeDomain* time_domain) {
   any_thread().time_domain = time_domain;
 }
 
+TimeDomain* TaskQueueImpl::GetTimeDomain() const {
+  if (base::PlatformThread::CurrentId() == thread_id_)
+    return main_thread_only().time_domain;
+
+  base::AutoLock lock(any_thread_lock_);
+  return any_thread().time_domain;
+}
+
 // static
 void TaskQueueImpl::QueueAsValueInto(const std::queue<Task>& queue,
                                      base::trace_event::TracedValue* state) {