Adds enableVirtualTime and setVirtualTimePolicy To Emulation domain.

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 1b4a45579bc0aaef1225291de4f14d959e1db2c1..495a1db31cfd3b94b1cda92536cd420d8a009345 100644
--- a/components/scheduler/renderer/web_frame_scheduler_impl.cc
+++ b/components/scheduler/renderer/web_frame_scheduler_impl.cc
@@ -104,6 +104,20 @@ blink::WebTaskRunner* WebFrameSchedulerImpl::unthrottledTaskRunner() {
   return unthrottled_web_task_runner_.get();
 }
 
+blink::WebViewScheduler* WebFrameSchedulerImpl::webViewScheduler() {
+  return parent_web_view_scheduler_;
+}
+
+void WebFrameSchedulerImpl::incrementPendingResourceLoadCount() {
+  if (parent_web_view_scheduler_)
+    parent_web_view_scheduler_->incrementPendingResourceLoadCount();
+}
+
+void WebFrameSchedulerImpl::decrementPendingResourceLoadCount() {
+  if (parent_web_view_scheduler_)
+    parent_web_view_scheduler_->decrementPendingResourceLoadCount();
+}
+
 void WebFrameSchedulerImpl::setPageVisible(bool page_visible) {
   DCHECK(parent_web_view_scheduler_);
   if (page_visible_ == page_visible)