shill: rename DispatchOnType to SetProperty

I think this name is clearer. While the function does
have to dispatch based on type, what the caller is trying
to do is to set a property.

BUG=None
TEST=unit tests
Change-Id: I7eedd5a74de7f465310d07271e61cff320645fd8
Reviewed-on: https://gerrit.chromium.org/gerrit/15538
Reviewed-by: mukesh agrawal <quiche@chromium.org>
Tested-by: mukesh agrawal <quiche@chromium.org>
Commit-Ready: mukesh agrawal <quiche@chromium.org>
diff --git a/service_dbus_adaptor.cc b/service_dbus_adaptor.cc
index 6a54471..ccdb85e 100644
--- a/service_dbus_adaptor.cc
+++ b/service_dbus_adaptor.cc
@@ -68,7 +68,7 @@
 void ServiceDBusAdaptor::SetProperty(const string &name,
                                      const ::DBus::Variant &value,
                                      ::DBus::Error &error) {
-  DBusAdaptor::DispatchOnType(service_->mutable_store(), name, value, &error);
+  DBusAdaptor::SetProperty(service_->mutable_store(), name, value, &error);
 }
 
 void ServiceDBusAdaptor::ClearProperty(const string &name,