attempt to fix build bustage when using MSVC8.

ipc/glue/AsyncChannel.cpp

@@ -52,6 +52,8 @@ struct RunnableMethodTraits<mozilla::ipc::AsyncChannel>
 namespace mozilla {
 namespace ipc {
 
+// XXX work around bug in name resolution in MSVC8
+typedef mozilla::ipc::AsyncChannel::Listener Listener;
 
 bool
 AsyncChannel::Open(Transport* aTransport, MessageLoop* aIOLoop)

ipc/glue/RPCChannel.cpp

@@ -54,6 +54,8 @@ struct RunnableMethodTraits<mozilla::ipc::RPCChannel>
 namespace mozilla {
 namespace ipc {
 
+// XXX work around bug in name resolution in MSVC8
+typedef mozilla::ipc::RPCChannel::Listener Listener;
 
 bool
 RPCChannel::Call(Message* msg, Message* reply)

ipc/glue/SyncChannel.cpp

@@ -54,6 +54,9 @@ struct RunnableMethodTraits<mozilla::ipc::SyncChannel>
 namespace mozilla {
 namespace ipc {
 
+// XXX work around bug in name resolution in MSVC8
+typedef mozilla::ipc::SyncChannel::Listener Listener;
+
 bool
 SyncChannel::Send(Message* msg, Message* reply)
 {