allow to specify schedule time as a relative value

bin/node/runtime/src/lib.rs

@@ -97,7 +97,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	// and set impl_version to 0. If only runtime
 	// implementation changes and behavior does not, then leave spec_version as
 	// is and increment impl_version.
-	spec_version: 255,
+	spec_version: 256,
 	impl_version: 0,
 	apis: RUNTIME_API_VERSIONS,
 	transaction_version: 1,

frame/democracy/src/benchmarking.rs

@@ -22,7 +22,7 @@ use super::*;
 use frame_benchmarking::{benchmarks, account};
 use frame_support::{
 	IterableStorageMap,
-	traits::{Currency, Get, EnsureOrigin, OnInitialize, UnfilteredDispatchable},
+	traits::{Currency, Get, EnsureOrigin, OnInitialize, UnfilteredDispatchable, schedule::DelayedDispatchTime},
 };
 use frame_system::{RawOrigin, Module as System, self, EventRecord};
 use sp_runtime::traits::{Bounded, One};
@@ -76,7 +76,7 @@ fn add_referendum<T: Trait>(n: u32) -> Result<ReferendumIndex, &'static str> {
 	let referendum_index: ReferendumIndex = ReferendumCount::get() - 1;
 	T::Scheduler::schedule_named(
 		(DEMOCRACY_ID, referendum_index).encode(),
-		1.into(),
+		DelayedDispatchTime::At(1.into()),
 		None,
 		63,
 		system::RawOrigin::Root.into(),

frame/democracy/src/lib.rs

@@ -163,7 +163,7 @@ use frame_support::{
 	weights::{Weight, DispatchClass},
 	traits::{
 		Currency, ReservableCurrency, LockableCurrency, WithdrawReason, LockIdentifier, Get,
-		OnUnbalanced, BalanceStatus, schedule::Named as ScheduleNamed, EnsureOrigin
+		OnUnbalanced, BalanceStatus, schedule::{Named as ScheduleNamed, DelayedDispatchTime}, EnsureOrigin
 	},
 	dispatch::DispatchResultWithPostInfo,
 };
@@ -1625,7 +1625,7 @@ impl<T: Trait> Module<T> {
 
 				if T::Scheduler::schedule_named(
 					(DEMOCRACY_ID, index).encode(),
-					when,
+					DelayedDispatchTime::At(when),
 					None,
 					63,
 					system::RawOrigin::Root.into(),

frame/scheduler/src/benchmarking.rs

@@ -39,7 +39,7 @@ fn fill_schedule<T: Trait> (when: T::BlockNumber, n: u32) -> Result<(), &'static
 		// Named schedule is strictly heavier than anonymous
 		Scheduler::<T>::do_schedule_named(
 			i.encode(),
-			when,
+			DelayedDispatchTime::At(when),
 			// Add periodicity
 			Some((T::BlockNumber::one(), 100)),
 			// HARD_DEADLINE priority means it gets executed no matter what