Revert of [cherrypick] Fix computation of runtime for throttled tasks

components/scheduler/base/time_domain.h

Index: components/scheduler/base/time_domain.h
diff --git a/components/scheduler/base/time_domain.h b/components/scheduler/base/time_domain.h
index 4e4fbad633a1ed688f2caa24b55f2fbaeaa0e708..dd82a13334202fb36550b7a0512d7b05fadac300 100644
--- a/components/scheduler/base/time_domain.h
+++ b/components/scheduler/base/time_domain.h
@@ -45,13 +45,6 @@
   // any thread.
   // TODO(alexclarke): Make this main thread only.
   virtual LazyNow CreateLazyNow() = 0;
-
-  // Computes a runtime which is >= |time_domain_now| + |delay|. This is used to
-  // allow the TimeDomain to decide if the real or virtual time should be used
-  // when computing the task run time.  This can be called from any thread.
-  virtual base::TimeTicks ComputeDelayedRunTime(
-      base::TimeTicks time_domain_now,
-      base::TimeDelta delay) const = 0;
 
   // Some TimeDomains support virtual time, this method tells us to advance time
   // if possible and return true if time was advanced.