Use std::string_view to construct dbus::ObjectPath

This change improves the efficiency of dbus::ObjectPath constructor
call sites which typically invoke this method with a compile-time
constant.

Change-Id: I8173894ae31939f9864e607b48086564806f229c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6036254
Auto-Submit: Reilly Grant <reillyg@chromium.org>
Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Commit-Queue: Steven Bennetts <stevenjb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1385724}
NOKEYCHECK=True
GitOrigin-RevId: 6576fc650c070d503f42640c3004fec4f49ce80c
1 file changed