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 bbcfd206db4861bac23a3bceb4f3aed630a8385e..7fd69f5c0d4ceeabcf912e6f1e1cf3c01a09f0a8 100644
--- a/content/test/fake_renderer_scheduler.cc
+++ b/content/test/fake_renderer_scheduler.cc
@@ -40,6 +40,10 @@ void FakeRendererScheduler::DidReceiveInputEventOnCompositorThread(
 void FakeRendererScheduler::DidAnimateForInputOnCompositorThread() {
 }
 
+bool FakeRendererScheduler::ShouldAnticipateHighPriorityWork() {
+  return false;
+}
+
 bool FakeRendererScheduler::ShouldYieldForHighPriorityWork() {
   return false;
 }