[scheduler] Change TaskQueue observer call mechanism.

third_party/WebKit/Source/platform/scheduler/renderer/task_queue_throttler.cc

Index: third_party/WebKit/Source/platform/scheduler/renderer/task_queue_throttler.cc
diff --git a/third_party/WebKit/Source/platform/scheduler/renderer/task_queue_throttler.cc b/third_party/WebKit/Source/platform/scheduler/renderer/task_queue_throttler.cc
index 1c3cd00bfe7a0303b2cde56241e11283888b371b..d5ee1e1e9cf8b8b244a06907f856aaced21c989c 100644
--- a/third_party/WebKit/Source/platform/scheduler/renderer/task_queue_throttler.cc
+++ b/third_party/WebKit/Source/platform/scheduler/renderer/task_queue_throttler.cc
@@ -26,7 +26,7 @@ namespace {
 
 base::Optional<base::TimeTicks> NextTaskRunTime(LazyNow* lazy_now,
                                                 TaskQueue* queue) {
-  if (queue->HasPendingImmediateWork())
+  if (queue->HasTaskToRunImmediately())
     return lazy_now->Now();
   return queue->GetNextScheduledWakeUp();
 }