Set uncles inherent (#3317)

* Include uncles

* Filter missing uncles

* Moved inherent registration to a new crate

* Ignore invalid inherent encoding

substrate/core/consensus/babe/src/lib.rs

@@ -67,6 +67,7 @@ use client::{
 	block_builder::api::BlockBuilder as BlockBuilderApi,
 	blockchain::{self, HeaderBackend, ProvideCache}, BlockchainEvents, CallExecutor, Client,
 	runtime_api::ApiExt, error::Result as ClientResult, backend::{AuxStore, Backend},
+	ProvideUncles,
 	utils::is_descendent_of,
 };
 use fork_tree::ForkTree;
@@ -182,9 +183,9 @@ pub fn start_babe<B, C, SC, E, I, SO, Error, H>(BabeParams {
 	consensus_common::Error,
 > where
 	B: BlockT<Header=H>,
-	C: ProvideRuntimeApi + ProvideCache<B>,
+	C: ProvideRuntimeApi + ProvideCache<B> + ProvideUncles<B> + Send + Sync + 'static,
 	C::Api: BabeApi<B>,
-	SC: SelectChain<B>,
+	SC: SelectChain<B> + 'static,
 	E::Proposer: Proposer<B, Error=Error>,
 	<E::Proposer as Proposer<B>>::Create: Unpin + Send + 'static,
 	H: Header<Hash=B::Hash>,
@@ -203,6 +204,11 @@ pub fn start_babe<B, C, SC, E, I, SO, Error, H>(BabeParams {
 		keystore,
 	};
 	register_babe_inherent_data_provider(&inherent_data_providers, config.0.slot_duration())?;
+	uncles::register_uncles_inherent_data_provider(
+		client.clone(),
+		select_chain.clone(),
+		&inherent_data_providers,
+	)?;
 	Ok(slots::start_slot_worker(
 		config.0,
 		select_chain,