Revert of Per WebViewScheduler virtual time

components/scheduler/renderer/renderer_scheduler_impl.cc

Index: components/scheduler/renderer/renderer_scheduler_impl.cc
diff --git a/components/scheduler/renderer/renderer_scheduler_impl.cc b/components/scheduler/renderer/renderer_scheduler_impl.cc
index 5b11beacbf75c2dcb2b835d27a537cc1cbfcf447..9076b2c56a6a7fde816d4f9cfe68f28321b04102 100644
--- a/components/scheduler/renderer/renderer_scheduler_impl.cc
+++ b/components/scheduler/renderer/renderer_scheduler_impl.cc
@@ -1128,6 +1128,27 @@
   UpdatePolicyLocked(UpdateType::MAY_EARLY_OUT_IF_POLICY_UNCHANGED);
 }
 
+double RendererSchedulerImpl::VirtualTimeSeconds() const {
+  TaskQueue* current_tq = helper_.CurrentlyExecutingTaskQueue();
+  if (current_tq && current_tq->GetTimeDomain()) {
+    return (current_tq->GetTimeDomain()->Now() -
+            base::TimeTicks::UnixEpoch()).InSecondsF();
+  }
+  return (helper_.scheduler_tqm_delegate()->NowTicks() -
+          base::TimeTicks::UnixEpoch()).InSecondsF();
+}
+
+double RendererSchedulerImpl::MonotonicallyIncreasingVirtualTimeSeconds()
+    const {
+  TaskQueue* current_tq = helper_.CurrentlyExecutingTaskQueue();
+  if (current_tq && current_tq->GetTimeDomain()) {
+    return current_tq->GetTimeDomain()->Now().ToInternalValue() /
+           static_cast<double>(base::Time::kMicrosecondsPerSecond);
+  }
+  return helper_.scheduler_tqm_delegate()->NowTicks().ToInternalValue() /
+          static_cast<double>(base::Time::kMicrosecondsPerSecond);
+}
+
 void RendererSchedulerImpl::RegisterTimeDomain(TimeDomain* time_domain) {
   helper_.RegisterTimeDomain(time_domain);
 }