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/wifi_service_unittest.cc b/wifi_service_unittest.cc
index 9c8c4e7..ab3844f 100644
--- a/wifi_service_unittest.cc
+++ b/wifi_service_unittest.cc
@@ -13,6 +13,7 @@
 #include <gmock/gmock.h>
 #include <gtest/gtest.h>
 
+#include "shill/event_dispatcher.h"
 #include "shill/manager.h"
 #include "shill/mock_adaptors.h"
 #include "shill/mock_control.h"
@@ -20,7 +21,6 @@
 #include "shill/mock_store.h"
 #include "shill/mock_wifi.h"
 #include "shill/property_store_unittest.h"
-#include "shill/shill_event.h"
 #include "shill/wpa_supplicant.h"
 
 using std::map;