Revert of Per WebViewScheduler virtual time

components/scheduler/child/web_task_runner_impl.cc

Index: components/scheduler/child/web_task_runner_impl.cc
diff --git a/components/scheduler/child/web_task_runner_impl.cc b/components/scheduler/child/web_task_runner_impl.cc
index 51b93dd9d451e6b194bdd512137820a5633350d5..49b5133b9ab033ba545844c97b00628226727521 100644
--- a/components/scheduler/child/web_task_runner_impl.cc
+++ b/components/scheduler/child/web_task_runner_impl.cc
@@ -7,7 +7,6 @@
 #include "base/bind.h"
 #include "base/location.h"
 #include "components/scheduler/base/task_queue.h"
-#include "components/scheduler/base/time_domain.h"
 #include "third_party/WebKit/public/platform/WebTraceLocation.h"
 
 namespace scheduler {
@@ -41,16 +40,6 @@
       base::TimeDelta::FromMillisecondsD(delayMs));
 }
 
-double WebTaskRunnerImpl::virtualTimeSeconds() const {
-  return (task_queue_->GetTimeDomain()->Now() - base::TimeTicks::UnixEpoch())
-      .InSecondsF();
-}
-
-double WebTaskRunnerImpl::monotonicallyIncreasingVirtualTimeSeconds() const {
-  return task_queue_->GetTimeDomain()->Now().ToInternalValue() /
-         static_cast<double>(base::Time::kMicrosecondsPerSecond);
-}
-
 blink::WebTaskRunner* WebTaskRunnerImpl::clone() {
   return new WebTaskRunnerImpl(task_queue_);
 }