Update some types and interfaces to match the spec (#24)

* Update primitives.

* Fix validator interface.

substrate/rpc/src/chain/tests.rs

@@ -14,6 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Polkadot.  If not, see <http://www.gnu.org/licenses/>.
 
+use primitives::parachain;
 use super::*;
 
 use test_helpers::Blockchain;
@@ -26,9 +27,10 @@ fn should_return_header() {
 		ChainApi::header(&state, 0.into()),
 		Ok(Some(ref x)) if x == &block::Header {
 			parent_hash: 0.into(),
-			state_root: 0.into(),
-			timestamp: 0,
 			number: 0,
+			state_root: 0.into(),
+			parachain_activity: parachain::Activity(vec![0]),
+			logs: vec![],
 		}
 	);
 

substrate/rpc/src/test_helpers.rs

@@ -15,7 +15,7 @@
 // along with Polkadot.  If not, see <http://www.gnu.org/licenses/>.
 
 use client;
-use primitives::block;
+use primitives::{block, parachain};
 
 /// Temporary dummy blockchain implementation for tests.
 #[derive(Debug, Default)]
@@ -33,10 +33,11 @@ impl client::Blockchain for Blockchain {
 			None
 		} else {
 			Some(block::Header {
-				number: 0,
 				parent_hash: 0.into(),
+				number: 0,
 				state_root: 0.into(),
-				timestamp: 0,
+				parachain_activity: parachain::Activity(vec![0]),
+				logs: vec![],
 			})
 		})
 	}