switched skslc to_string strategy after repeated problems on Android

BUG=skia:

Change-Id: I9e27d06351e4bfcd503882b2c604878b44b6e5cc
Reviewed-on: https://skia-review.googlesource.com/11015
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
1 file changed