Remove SkString fwd decl from SkTypes.h.

Remaining users depending on this seem to be cleaned up, so remove this.

Change-Id: I26003831f1c84b0caf9379cbd0952833640db432
Reviewed-on: https://skia-review.googlesource.com/134602
Reviewed-by: Hal Canary <halcanary@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
1 file changed