Revert of [scheduler] Add TaskQueue::Observer

third_party/WebKit/Source/platform/scheduler/renderer/throttled_time_domain.h

Index: third_party/WebKit/Source/platform/scheduler/renderer/throttled_time_domain.h
diff --git a/third_party/WebKit/Source/platform/scheduler/renderer/throttled_time_domain.h b/third_party/WebKit/Source/platform/scheduler/renderer/throttled_time_domain.h
index d26f8c18a9a26854ca1b21665d90e6e8a489be18..4faaf5b140b1c6a9161f364acc15a5b79f0be02c 100644
--- a/third_party/WebKit/Source/platform/scheduler/renderer/throttled_time_domain.h
+++ b/third_party/WebKit/Source/platform/scheduler/renderer/throttled_time_domain.h
@@ -12,19 +12,20 @@ namespace blink {
 namespace scheduler {
 
 // A time domain for throttled tasks. behaves like an RealTimeDomain except it
-// relies on the owner (TaskQueueThrottler) to schedule wake_ups.
+// relies on the owner (TaskQueueThrottler) to schedule wakeups.
 class BLINK_PLATFORM_EXPORT ThrottledTimeDomain : public RealTimeDomain {
  public:
-  ThrottledTimeDomain(const char* tracing_category);
+  ThrottledTimeDomain(TimeDomain::Observer* observer,
+                      const char* tracing_category);
   ~ThrottledTimeDomain() override;
 
   // TimeDomain implementation:
   const char* GetName() const override;
-  void RequestWakeUpAt(base::TimeTicks now, base::TimeTicks run_time) override;
-  void CancelWakeUpAt(base::TimeTicks run_time) override;
+  void RequestWakeupAt(base::TimeTicks now, base::TimeTicks run_time) override;
+  void CancelWakeupAt(base::TimeTicks run_time) override;
   base::Optional<base::TimeDelta> DelayTillNextTask(LazyNow* lazy_now) override;
 
-  using TimeDomain::WakeUpReadyDelayedQueues;
+  using TimeDomain::WakeupReadyDelayedQueues;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ThrottledTimeDomain);