Revert of Change VirtualTimePolicy::PAUSE_IF_NETWORK_FETCHES_PENDING

components/scheduler/renderer/web_frame_scheduler_impl.cc

Index: components/scheduler/renderer/web_frame_scheduler_impl.cc
diff --git a/components/scheduler/renderer/web_frame_scheduler_impl.cc b/components/scheduler/renderer/web_frame_scheduler_impl.cc
index cbf66774a3fc3df49a0498a85e224bf4d3d2f0bd..d6a6ca6eafc50742bddb84c38fb7fa99e9cb66f7 100644
--- a/components/scheduler/renderer/web_frame_scheduler_impl.cc
+++ b/components/scheduler/renderer/web_frame_scheduler_impl.cc
@@ -61,6 +61,10 @@
     loading_task_queue_ =
         renderer_scheduler_->NewLoadingTaskRunner("frame_loading_tq");
     loading_task_queue_->SetBlameContext(blame_context_);
+    if (parent_web_view_scheduler_->virtual_time_domain()) {
+      loading_task_queue_->SetTimeDomain(
+          parent_web_view_scheduler_->virtual_time_domain());
+    }
     loading_web_task_runner_.reset(new WebTaskRunnerImpl(loading_task_queue_));
   }
   return loading_web_task_runner_.get();
@@ -72,7 +76,10 @@
     timer_task_queue_ =
         renderer_scheduler_->NewTimerTaskRunner("frame_timer_tq");
     timer_task_queue_->SetBlameContext(blame_context_);
-    if (!page_visible_) {
+    if (parent_web_view_scheduler_->virtual_time_domain()) {
+      timer_task_queue_->SetTimeDomain(
+          parent_web_view_scheduler_->virtual_time_domain());
+    } else if (!page_visible_) {
       renderer_scheduler_->throttling_helper()->IncreaseThrottleRefCount(
           timer_task_queue_.get());
     }
@@ -87,6 +94,10 @@
     unthrottled_task_queue_ =
         renderer_scheduler_->NewUnthrottledTaskRunner("frame_unthrottled_tq");
     unthrottled_task_queue_->SetBlameContext(blame_context_);
+    if (parent_web_view_scheduler_->virtual_time_domain()) {
+      unthrottled_task_queue_->SetTimeDomain(
+          parent_web_view_scheduler_->virtual_time_domain());
+    }
     unthrottled_web_task_runner_.reset(
         new WebTaskRunnerImpl(unthrottled_task_queue_));
   }
@@ -122,8 +133,10 @@
 
   page_visible_ = page_visible;
 
-  if (!timer_web_task_runner_)
+  if (!timer_web_task_runner_ ||
+      parent_web_view_scheduler_->virtual_time_domain()) {
     return;
+  }
 
   if (page_visible_) {
     renderer_scheduler_->throttling_helper()->DecreaseThrottleRefCount(
@@ -134,4 +147,21 @@
   }
 }
 
+void WebFrameSchedulerImpl::OnVirtualTimeDomainChanged() {
+  DCHECK(parent_web_view_scheduler_);
+  DCHECK(parent_web_view_scheduler_->virtual_time_domain());
+
+  if (timer_task_queue_) {
+    renderer_scheduler_->throttling_helper()->UnregisterTaskQueue(
+        timer_task_queue_.get());
+    timer_task_queue_->SetTimeDomain(
+        parent_web_view_scheduler_->virtual_time_domain());
+  }
+
+  if (loading_task_queue_) {
+    loading_task_queue_->SetTimeDomain(
+        parent_web_view_scheduler_->virtual_time_domain());
+  }
+}
+
 }  // namespace scheduler