Revert of remove sprintf (https://codereview.chromium.org/230413005/)

Reason for revert:
Boo, hiss, SK_ARRAY_COUNT not defined in skia_launcher.cpp!

Original issue's description:
> remove sprintf
>
> Committed: http://code.google.com/p/skia/source/detail?r=14123

R=halcanary@google.com
TBR=halcanary@google.com
NOTREECHECKS=true
NOTRY=true

Author: mtklein@google.com

Review URL: https://codereview.chromium.org/232323002

git-svn-id: http://skia.googlecode.com/svn/trunk@14125 2bbb7eff-a529-9590-31e7-b0007b416f81
2 files changed