Hook RPC extrinsic import into propagation (#158)

* call `on_new_transactions` when we import

* fix trace

* pass correct bytes to network

* clean up

* cull before repropagating; repropagate on timer

* add a little tracing

substrate/substrate/rpc/src/author/mod.rs

@@ -16,8 +16,6 @@
 
 //! Substrate block-author/full-node API.
 
-use std::sync::Arc;
-use parking_lot::Mutex;
 use primitives::block::Extrinsic;
 
 pub mod error;
@@ -35,15 +33,3 @@ build_rpc_trait! {
 		fn submit_extrinsic(&self, Extrinsic) -> Result<()>;
 	}
 }
-
-/// Variant of the AuthorApi that doesn't need to be Sync + Send + 'static.
-pub trait AsyncAuthorApi: Send + 'static {
-	/// Submit extrinsic for inclusion in block.
-	fn submit_extrinsic(&mut self, Extrinsic) -> Result<()>;
-}
-
-impl<T: AsyncAuthorApi> AuthorApi for Arc<Mutex<T>> {
-	fn submit_extrinsic(&self, xt: Extrinsic) -> Result<()> {
-		self.as_ref().lock().submit_extrinsic(xt)
-	}
-}