Reland "Throttle resource message requests during user interaction"

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 2e20b7f9b46c5dfc56d6fd0f2a659f7a10c61168..9c6d07e77c8211cd6a13e7287101abc9a446af90 100644
--- a/content/test/fake_renderer_scheduler.cc
+++ b/content/test/fake_renderer_scheduler.cc
@@ -45,6 +45,10 @@ void FakeRendererScheduler::DidReceiveInputEventOnCompositorThread(
 void FakeRendererScheduler::DidAnimateForInputOnCompositorThread() {
 }
 
+bool FakeRendererScheduler::IsHighPriorityWorkAnticipated() {
+  return false;
+}
+
 bool FakeRendererScheduler::ShouldYieldForHighPriorityWork() {
   return false;
 }