[scheduler] Add TaskQueue::Observer

third_party/WebKit/Source/platform/scheduler/base/real_time_domain.cc

Index: third_party/WebKit/Source/platform/scheduler/base/real_time_domain.cc
diff --git a/third_party/WebKit/Source/platform/scheduler/base/real_time_domain.cc b/third_party/WebKit/Source/platform/scheduler/base/real_time_domain.cc
index 7406dc4b21d654f8b1da39f5fcb646fb1e446504..52ef21c50d8b9430127b2a915e18c4228f310c4e 100644
--- a/third_party/WebKit/Source/platform/scheduler/base/real_time_domain.cc
+++ b/third_party/WebKit/Source/platform/scheduler/base/real_time_domain.cc
@@ -13,15 +13,7 @@ namespace blink {
 namespace scheduler {
 
 RealTimeDomain::RealTimeDomain(const char* tracing_category)
-    : TimeDomain(nullptr),
-      tracing_category_(tracing_category),
-      task_queue_manager_(nullptr) {}
-
-RealTimeDomain::RealTimeDomain(TimeDomain::Observer* observer,
-                               const char* tracing_category)
-    : TimeDomain(observer),
-      tracing_category_(tracing_category),
-      task_queue_manager_(nullptr) {}
+    : tracing_category_(tracing_category), task_queue_manager_(nullptr) {}
 
 RealTimeDomain::~RealTimeDomain() {}
 
@@ -39,7 +31,7 @@ base::TimeTicks RealTimeDomain::Now() const {
   return task_queue_manager_->delegate()->NowTicks();
 }
 
-void RealTimeDomain::RequestWakeupAt(base::TimeTicks now,
+void RealTimeDomain::RequestWakeUpAt(base::TimeTicks now,
                                      base::TimeTicks run_time) {
   // NOTE this is only called if the scheduled runtime is sooner than any
   // previously scheduled runtime, or there is no (outstanding) previously
@@ -47,7 +39,7 @@ void RealTimeDomain::RequestWakeupAt(base::TimeTicks now,
   task_queue_manager_->MaybeScheduleDelayedWork(FROM_HERE, this, now, run_time);
 }
 
-void RealTimeDomain::CancelWakeupAt(base::TimeTicks run_time) {
+void RealTimeDomain::CancelWakeUpAt(base::TimeTicks run_time) {
   task_queue_manager_->CancelDelayedWork(this, run_time);
 }