Add a signal to the scheduler that a navigation is expected

components/scheduler/renderer/renderer_web_scheduler_impl.cc

Index: components/scheduler/renderer/renderer_web_scheduler_impl.cc
diff --git a/components/scheduler/renderer/renderer_web_scheduler_impl.cc b/components/scheduler/renderer/renderer_web_scheduler_impl.cc
index 7aa559d9df7b81f627d2d512af7bcab188f5c3b8..026927e2dfdc6cc6deaae4acc043bbaf91aeb847 100644
--- a/components/scheduler/renderer/renderer_web_scheduler_impl.cc
+++ b/components/scheduler/renderer/renderer_web_scheduler_impl.cc
@@ -35,4 +35,16 @@ RendererWebSchedulerImpl::createFrameHostScheduler() {
   return new WebFrameHostSchedulerImpl(renderer_scheduler_);
 }
 
+void RendererWebSchedulerImpl::addPendingNavigation() {
+  renderer_scheduler_->AddPendingNavigation();
+}
+
+void RendererWebSchedulerImpl::removePendingNavigation() {
+  renderer_scheduler_->RemovePendingNavigation();
+}
+
+void RendererWebSchedulerImpl::onNavigationStarted() {
+  renderer_scheduler_->OnNavigationStarted();
+}
+
 }  // namespace scheduler