Revert of Dont post delayed DoWork for disabled queues.

third_party/WebKit/Source/platform/scheduler/base/task_queue_manager.h

Index: third_party/WebKit/Source/platform/scheduler/base/task_queue_manager.h
diff --git a/third_party/WebKit/Source/platform/scheduler/base/task_queue_manager.h b/third_party/WebKit/Source/platform/scheduler/base/task_queue_manager.h
index eebf5f097dacba2b6c3c458e759869dda2e49c02..21c4aedc800ec0af9b8e848cf3d56a5873467575 100644
--- a/third_party/WebKit/Source/platform/scheduler/base/task_queue_manager.h
+++ b/third_party/WebKit/Source/platform/scheduler/base/task_queue_manager.h
@@ -74,14 +74,8 @@
   // runner. These delayed tasks are de-duplicated. Must be called on the thread
   // this class was created on.
   void MaybeScheduleDelayedWork(const tracked_objects::Location& from_here,
-                                TimeDomain* requesting_time_domain,
-                                LazyNow* lazy_now,
-                                base::TimeTicks run_time);
-
-  // Cancels a delayed task to process work at |run_time|, previously requested
-  // with MaybeScheduleDelayedWork.
-  void CancelDelayedWork(TimeDomain* requesting_time_domain,
-                         base::TimeTicks run_time);
+                                base::TimeTicks now,
+                                base::TimeDelta delay);
 
   // Set the number of tasks executed in a single invocation of the task queue
   // manager. Increasing the batch size can reduce the overhead of yielding
@@ -155,59 +149,10 @@
   // need them, you can turn them off.
   void SetRecordTaskDelayHistograms(bool record_task_delay_histograms);
 
- protected:
+ private:
   friend class LazyNow;
   friend class internal::TaskQueueImpl;
   friend class TaskQueueManagerTest;
-
-  // Intermediate data structure, used to compute NextDelayedDoWork.
-  class NextTaskDelay {
-   public:
-    NextTaskDelay() : time_domain_(nullptr) {}
-
-    NextTaskDelay(base::TimeDelta delay, TimeDomain* time_domain)
-        : delay_(delay), time_domain_(time_domain) {
-      DCHECK_GT(delay, base::TimeDelta());
-      DCHECK(time_domain);
-    }
-
-    base::TimeDelta delay() const { return delay_; }
-    TimeDomain* time_domain() const { return time_domain_; }
-
-    bool operator<(const NextTaskDelay& other) const {
-      return delay_ < other.delay_;
-    }
-
-   private:
-    base::TimeDelta delay_;
-    TimeDomain* time_domain_;
-  };
-
- private:
-  // Represents a scheduled delayed DoWork (if any). Only public for testing.
-  class NextDelayedDoWork {
-   public:
-    NextDelayedDoWork() : time_domain_(nullptr) {}
-    NextDelayedDoWork(base::TimeTicks run_time, TimeDomain* time_domain)
-        : run_time_(run_time), time_domain_(time_domain) {
-      DCHECK_NE(run_time, base::TimeTicks());
-      DCHECK(time_domain);
-    }
-
-    base::TimeTicks run_time() const { return run_time_; }
-    TimeDomain* time_domain() const { return time_domain_; }
-
-    void Clear() {
-      run_time_ = base::TimeTicks();
-      time_domain_ = nullptr;
-    }
-
-    explicit operator bool() const { return !run_time_.is_null(); }
-
-   private:
-    base::TimeTicks run_time_;
-    TimeDomain* time_domain_;
-  };
 
   class DeletionSentinel : public base::RefCounted<DeletionSentinel> {
    private:
@@ -233,7 +178,7 @@
   void DoWork(bool delayed);
 
   // Post a DoWork continuation if |next_delay| is not empty.
-  void PostDoWorkContinuationLocked(base::Optional<NextTaskDelay> next_delay,
+  void PostDoWorkContinuationLocked(base::Optional<base::TimeDelta> next_delay,
                                     LazyNow* lazy_now,
                                     MoveableAutoLock&& lock);
 
@@ -271,7 +216,7 @@
 
   // Calls DelayTillNextTask on all time domains and returns the smallest delay
   // requested if any.
-  base::Optional<NextTaskDelay> ComputeDelayTillNextTaskLocked(
+  base::Optional<base::TimeDelta> ComputeDelayTillNextTaskLocked(
       LazyNow* lazy_now);
 
   void MaybeRecordTaskDelayHistograms(
@@ -348,7 +293,7 @@
     return any_thread_;
   }
 
-  NextDelayedDoWork next_delayed_do_work_;
+  base::TimeTicks next_scheduled_delayed_do_work_time_;
 
   bool record_task_delay_histograms_;