Reactivate SSSE3 optimizations, undoing r3770.
Reactivate SSSE3 optimizations, undoing r3770.

This will break Android x86 clients; they will need to work around, and
hopefully can resubmit a patch to do so that doesn't disable SSSE3 on
all other platforms (20-30% performance penalty).

http://codereview.appspot.com/6201070/



csulmone/skia,csulmone/skia,csulmone/skia,csulmone/skia