ChanMgr: Rename ChannelMap to MgrState

We're doing this because the type now holds "all the mutable state
in a ChanMgr", not just the map.

This is a pure renaming; no documentation has been updated.

Part of #606.

crates/tor-chanmgr/src/mgr.rs

@@ -82,7 +82,7 @@ pub(crate) struct AbstractChanMgr<CF: AbstractChannelFactory> {
     connector: CF,
 
     /// A map from ed25519 identity to channel, or to pending channel status.
-    pub(crate) channels: map::ChannelMap<CF::Channel>,
+    pub(crate) channels: map::MgrState<CF::Channel>,
 }
 
 /// Type alias for a future that we wait on to see when a pending
@@ -103,7 +103,7 @@ impl<CF: AbstractChannelFactory> AbstractChanMgr<CF> {
     ) -> Self {
         AbstractChanMgr {
             connector,
-            channels: map::ChannelMap::new(config.clone(), dormancy, netparams),
+            channels: map::MgrState::new(config.clone(), dormancy, netparams),
         }
     }
 

crates/tor-chanmgr/src/mgr/map.rs

@@ -31,7 +31,7 @@ mod padding_test;
 /// `Mutex<HashMap<...>>` to limit the amount of code that can see and
 /// lock the Mutex here.  (We're using a blocking mutex close to async
 /// code, so we need to be careful.)
-pub(crate) struct ChannelMap<C: AbstractChannel> {
+pub(crate) struct MgrState<C: AbstractChannel> {
     /// The data, within a lock
     inner: std::sync::Mutex<Inner<C>>,
 }
@@ -221,7 +221,7 @@ impl<C: AbstractChannel> ChannelState<C> {
     }
 }
 
-impl<C: AbstractChannel> ChannelMap<C> {
+impl<C: AbstractChannel> MgrState<C> {
     /// Create a new empty ChannelMap.
     pub(crate) fn new(
         config: ChannelConfig,
@@ -234,7 +234,7 @@ impl<C: AbstractChannel> ChannelMap<C> {
             .unwrap_or_else(|e: tor_error::Bug| panic!("bug detected on startup: {:?}", e));
         let _: Option<_> = update; // there are no channels yet, that would need to be told
 
-        ChannelMap {
+        MgrState {
             inner: std::sync::Mutex::new(Inner {
                 channels: ByRelayIds::new(),
                 config,
@@ -517,8 +517,8 @@ mod test {
     use tor_llcrypto::pk::ed25519::Ed25519Identity;
     use tor_proto::channel::params::ChannelPaddingInstructionsUpdates;
 
-    fn new_test_channel_map<C: AbstractChannel>() -> ChannelMap<C> {
-        ChannelMap::new(
+    fn new_test_channel_map<C: AbstractChannel>() -> MgrState<C> {
+        MgrState::new(
             ChannelConfig::default(),
             Default::default(),
             &Default::default(),