make tikuta as owner of ninjalog related files again

Ownership was removed accidentally in https://crrev.com/c/4171506.

Change-Id: Ie52bf9c7d8180743d24f84e32fe8ede1e1fe0398
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/4297357
Reviewed-by: Junji Watanabe <jwata@google.com>
Reviewed-by: Dirk Pranke <dpranke@google.com>
Commit-Queue: Dirk Pranke <dpranke@google.com>
Auto-Submit: Takuto Ikuta <tikuta@chromium.org>

OWNERS

@@ -12,6 +12,7 @@ per-file ninja*=thakis@chromium.org
 per-file autoninja*=brucedawson@chromium.org
 per-file post_build_ninja_summary.py=brucedawson@chromium.org
 per-file ninja_reclient.py=file://GOMA_OWNERS
+per-file ninjalog*=tikuta@chromium.org
 
 per-file presubmit*.py=brucedawson@chromium.org