silo away td when -local
silo away td when -local

Even with all the workarounds (deleted here), calling td methods still
costs a fair chunk of CPU work.  Instead of sneakily working around it,
just never call it when run locally.

Change-Id: I2e421a5d585c86a6315d56867a29bdcdc9d45479
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/364461
Reviewed-by: Mike Klein <14574f09dfa9b4e14759b88c3426a495a0e627b0@google.com>

google/skia,aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia,google/skia,google/skia,aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,google/skia,google/skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia