Allow expensive task blocking if there is pending iframe navigation

content/test/fake_renderer_scheduler.cc

Index: content/test/fake_renderer_scheduler.cc
diff --git a/content/test/fake_renderer_scheduler.cc b/content/test/fake_renderer_scheduler.cc
index 4f6e48b7f10964a70b9002c66dcb400d1f05f0ec..f8fb16c8bb4b2b51a04cb1a8699140744dbb0897 100644
--- a/content/test/fake_renderer_scheduler.cc
+++ b/content/test/fake_renderer_scheduler.cc
@@ -86,10 +86,11 @@ void FakeRendererScheduler::OnRendererBackgrounded() {
 void FakeRendererScheduler::OnRendererForegrounded() {
 }
 
-void FakeRendererScheduler::AddPendingNavigation() {
+void FakeRendererScheduler::AddPendingNavigation(bool main_frame_navigating) {
 }
 
-void FakeRendererScheduler::RemovePendingNavigation() {
+void FakeRendererScheduler::RemovePendingNavigation(
+    bool main_frame_navigating) {
 }
 
 void FakeRendererScheduler::OnNavigationStarted() {