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/device_unittest.cc b/device_unittest.cc
index 1980929..89493d6 100644
--- a/device_unittest.cc
+++ b/device_unittest.cc
@@ -19,6 +19,7 @@
 
 #include "shill/dbus_adaptor.h"
 #include "shill/dhcp_provider.h"
+#include "shill/event_dispatcher.h"
 #include "shill/manager.h"
 #include "shill/mock_adaptors.h"
 #include "shill/mock_control.h"
@@ -29,7 +30,6 @@
 #include "shill/mock_service.h"
 #include "shill/mock_store.h"
 #include "shill/property_store_unittest.h"
-#include "shill/shill_event.h"
 
 using std::map;
 using std::string;