shill: A couple of naming cleanups

Rename shill_event.* -> event_dispatcher.*.  This is more
consistent with correct style.  Also rename IOInputHandler ->
InputHandler.

BUG=None
TEST=Rerun unit tests

Change-Id: I13d56b857c85b32ba1418e894de68afc5a23f00d
Reviewed-on: http://gerrit.chromium.org/gerrit/10326
Reviewed-by: mukesh agrawal <quiche@chromium.org>
Reviewed-by: Darin Petkov <petkov@chromium.org>
Tested-by: Paul Stewart <pstew@chromium.org>
diff --git a/manager.cc b/manager.cc
index 76a029c..452cda3 100644
--- a/manager.cc
+++ b/manager.cc
@@ -27,12 +27,12 @@
 #include "shill/device_info.h"
 #include "shill/ephemeral_profile.h"
 #include "shill/error.h"
+#include "shill/event_dispatcher.h"
 #include "shill/key_file_store.h"
 #include "shill/service_sorter.h"
 #include "shill/profile.h"
 #include "shill/property_accessor.h"
 #include "shill/resolver.h"
-#include "shill/shill_event.h"
 #include "shill/service.h"
 #include "shill/wifi.h"
 #include "shill/wifi_service.h"